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Define cell constant. How is it related to conductivity.?
other than
learn this
log 10=1 log 100=2 log 1000=3 and so on.
now,coming to your question,
log 0.130 is same as log 130/1000.
log 130/1000 = log 130 - log 1000
= 2.113 - 3
= -0.8860.
what is debye huckel onsagers equation?
what is salt bridge?
explain its function?
how to take out the log of 13 * 10 power 6please explain properly
!!!!
calculate the strength of current required to deposit 1.2 gm of magnesium from molten mgcl2 in 1 hr
Calculate the potential of hydrogen electrode in contact with a solution whose pH is 10.
How many coulombs of electric charge mst be passed through a solution of Silver Nitrate to coat a copper sheet of area 100 cm sq on both sides with 0.005 mm thickness . density of Ag is 10.5 g/cm3 . (Ag=108)
Why does a dry cell become dead after a long time even if it has not been used?
what is discharge potential ?
The products of electrolysis of molten NaCl are Na metal and Cl2 gas, while the products of electrolysis of aqueous solution of NaCl are NaOH, Cl2 and H2.
Please explain this in detail with the appropriate reactions.
what is the difference between E cell and E0 cell??
what is redox couple
For how long a current of 1.5 ampere has to be passed through the electrolyte innorder to deposit 1g of Al when the electrode reaction is
Al3+ +3e → Al (Z=27)
why does mercury cell give a constant voltage throughout its life?
Here are a list of q'z pls ans. them briefly
q1)The number of faradays required to deposit 1g equivalent of alumininium(at wt.27)from a soln of AlCl3 is-
q2)What is the electrochemical equivalent of Cu in the rxn-
Cu2++2e---------Cu
q3)The specifc conductance of saturated soln of CaF2 is 3.86*10(power -15) and that of water used for solution is 0.15*10(power -5).What is the specific conductance of CaF2 alone?
q4)What is the molar conductivity "^". If resistivity is 'x' for 0.1 N H2SO4 solution?
q5)The conductivities at infinite dilution of NH4CL,NAOH and NaCl are 130,218,120.If equivalent conductance of N/100 soln of NH4OH is 10,degree of disociation of NH4OH at this dilution is-
q6)The resistance of a N/10 KCL aq. soln is 245 ohms.If the electrodes in the cell are 4cm apart and area having 7 cm sq. each,the molar conductance of the soln will be?
4/3 Al+O2 gives out 2/3 Al2O3. Find the minimum emf required to carry out the electrolysis of Al2O3.
delta G=-827kJ per mol of O2
The emf of the cell Zn|Zn2+(0.1 M)||Cd2+(M1)|Cd has been found to be 0.3305 V at 298 K.
Predict the products of electrolysis in each of the folloiwng:
Can 1 M NiSO4be stored in a vessel made up of copper?given: E(Ni2+/Ni ) = -1.20V and E (Cu2+/Cu) =0.34V
My doubt is (if wrong plz correct it) according to reation Ni I Ni+2 II Cu+2 I Cu ,this reaction will occur spontaneously,Then how could NiSO4 be stored in vessel made up of copper?It should react with it.Please explain And Sir plz don't paste the answer given to Priyanka as I couldn't understand that one.
What is the factors affecting electrode potential ?
Why Leclanche cell is also called Dry ?
construction working and uses of daniell cell
Calculate the quantity of charge in coulombs required to reduce 16.2 g of p-bezoquinone if current efficiency is75%.
Q. Explain the Molar Conductivity with weak and strong electrolytes ?
What are metallic conductors and electrolytic conductors?plz give examples also
What is the difference between galvanic cell & daniel cell?
The conductivity of 0.1 M solution of AgNO3 is 9.47 X 10-3 S cm-1 at 291 K. The ionic conductivities os Ag+ and NO3-at the same temperature are 55.7 and 50.8 Scm2equiv-1 respectively. Calculate the degree of dissociation of AgNO3 in 0.1 M solution. How to solve this and what's the meaning of ionic conductivities of the ions given here?
Calculate the potential of the half cell containing 0.10M K2Cr2O7, 0.20M Cr+2, and 1.0* 10-4M H+. The half cell reaction is
Cr2O7-2 +14 H++ 6e---------------- 2Cr+3 +7 H20
The standard electrode potential is given as 1.33V.???
Rate constant, K for first order reaction has been found to be 2.54*10 to the power -3 per sec. Calculate its three-fourth life.
The conductance of 0.1 M acetic acid at 298 K is 5.20 and that of 0.001 M acetic acid is 49.2. The ionic molar conductivity at infinite dilution of acetate and hydrogen ions are 349.8 and 40.9 S cm2 mol-1 resp. Calculate the degree of dissociation of acetic acid at these concentrations.
Sir, how to solve this.. and the conductances given in the first statement may be confused with conductivities because with dilution, it has decreased.. right sir?? or not??
for the reaction 3A(g)+B(g)=2C(g) at a given temperature,Kc=9.0 . what must be the volume of the flask, if a mixture of 2.0 mole each of A,B and C exist in equilibrium?
How to draw the resonating structures of H2SO4 and H2SO5 ???
can chlorine gas be stored in copper cylinder ? given electrode potential for(Cu2+/Cu)= 0.34V and electode potential for (Cl2/Cl-)=1.36V
Silver is electrodeposited on a metallic vessel of surface area 800 cm2 by passing
As per electrochemical series and on the basis of electrode potential values, identify the following:
(a) gas which has highest tendency for reduction.
(b) weakest oxidising ion.
What are the major topics of electrochemistry that can be asked in Chemistry Board Exam..
I mean.. right now it is no point studying this chapter from scratch.. there is?
What all should be studied in Electrochemistry for Chemistry Board?
Limiting molar conductivity of which is maximum in water at 298 K among the following
why is alternating current used instead of direct current in measuring electrolytic conduction ?
the blue colour of CuSO4 solutions is slowly discharged when a rod of zinc is dipped in it . explain..
calculate the equivalent conductance of 1 M h2so4 solution if its conductivity is 2.6x10 to the power -2 /ohm cm
give a test to distinguish b/w ethylamine and aniline ?
The metals that cannot be obtained by electrolysis of an aqueous solution of its salt is:
I) Ca
ii)Cu
iii)Cr
iv)Ag
state two advantages of (H2
answer it fastly!!!!!
The molar conductivities at infinite dilution for NaI, CH3COONa and (CH3COO)2Mg are 12.69, 9.10 and 18.78 S m² mol−1. What is Λ°m for MgI2 ?
What is the name of these compound[Zn(NH3)2Cl2] ?
a voltanic cell is set up in 25 degre c Al|Al3+(0.001M) and Ni| Ni2+(0.50M) calculate cell voltage
ans -1.46v
The resistance of a conductivity cell containing 0.001M KCl solution is 1500 ohm. What is the cell constant if conductivity of the solution at 298K is 0.000146 S/cm.
Cu does not dissolve in HCl but dissolves in nitric acid. Explain why?
Why mercury does not form amalgam with Iron?
Under what condition will a galvanic cell send no current into outer circuit?
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Syllabus
Define cell constant. How is it related to conductivity.?
other than
learn this
log 10=1 log 100=2 log 1000=3 and so on.
now,coming to your question,
log 0.130 is same as log 130/1000.
log 130/1000 = log 130 - log 1000
= 2.113 - 3
= -0.8860.
what is debye huckel onsagers equation?
1) different metallic conductor
2) different electrolytic conductor?
what is salt bridge?
explain its function?
how to take out the log of 13 * 10 power 6please explain properly
!!!!
calculate the strength of current required to deposit 1.2 gm of magnesium from molten mgcl2 in 1 hr
a) H2SO3
b) NH4OH
c) Ca(NO3)2
d) HCN
Calculate the potential of hydrogen electrode in contact with a solution whose pH is 10.
How many coulombs of electric charge mst be passed through a solution of Silver Nitrate to coat a copper sheet of area 100 cm sq on both sides with 0.005 mm thickness . density of Ag is 10.5 g/cm3 . (Ag=108)
Why does a dry cell become dead after a long time even if it has not been used?
what is discharge potential ?
The products of electrolysis of molten NaCl are Na metal and Cl2 gas, while the products of electrolysis of aqueous solution of NaCl are NaOH, Cl2 and H2.
Please explain this in detail with the appropriate reactions.
what is the difference between E cell and E0 cell??
what is redox couple
For how long a current of 1.5 ampere has to be passed through the electrolyte innorder to deposit 1g of Al when the electrode reaction is
Al3+ +3e → Al (Z=27)
why does mercury cell give a constant voltage throughout its life?
Here are a list of q'z pls ans. them briefly
q1)The number of faradays required to deposit 1g equivalent of alumininium(at wt.27)from a soln of AlCl3 is-
q2)What is the electrochemical equivalent of Cu in the rxn-
Cu2++2e---------Cu
q3)The specifc conductance of saturated soln of CaF2 is 3.86*10(power -15) and that of water used for solution is 0.15*10(power -5).What is the specific conductance of CaF2 alone?
q4)What is the molar conductivity "^". If resistivity is 'x' for 0.1 N H2SO4 solution?
q5)The conductivities at infinite dilution of NH4CL,NAOH and NaCl are 130,218,120.If equivalent conductance of N/100 soln of NH4OH is 10,degree of disociation of NH4OH at this dilution is-
q6)The resistance of a N/10 KCL aq. soln is 245 ohms.If the electrodes in the cell are 4cm apart and area having 7 cm sq. each,the molar conductance of the soln will be?
With full explanation
4/3 Al+O2 gives out 2/3 Al2O3. Find the minimum emf required to carry out the electrolysis of Al2O3.
delta G=-827kJ per mol of O2
Molar conductivity at infinite dilution for NH4Cl, NaOH and NaCl solution at 298K are respectively 129.8, 218.4 and 108.9 Scm2 mol-1 and ^m for 10-2 M solution of NH4OH is 9.33 Scm2 mol-1. Calculate the degree of dissociation of NH4OH
The emf of the cell Zn|Zn2+(0.1 M)||Cd2+(M1)|Cd has been found to be 0.3305 V at 298 K.
Predict the products of electrolysis in each of the folloiwng:
(i) An aqueous solution of AgNO3 with silver electrodes.(ii) An aqueous solution of AgNO3 with plantinum electrodes.(iii) A dilute solution of H2SO4 with platinum electrodesCan 1 M NiSO4be stored in a vessel made up of copper?given: E(Ni2+/Ni ) = -1.20V and E (Cu2+/Cu) =0.34V
My doubt is (if wrong plz correct it) according to reation Ni I Ni+2 II Cu+2 I Cu ,this reaction will occur spontaneously,Then how could NiSO4 be stored in vessel made up of copper?It should react with it.Please explain And Sir plz don't paste the answer given to Priyanka as I couldn't understand that one.
What is the factors affecting electrode potential ?
(a) In a dry cell, the build up of ammonia around the carbon cathode should disrupt the electric current, but in practice this does not happen.
(b) Ordinary dry cells are not rechargeable
(A) 3 x 105 (B) 9 x 105 (C) 4.5 x 105 (D) 5.16 x 105
Why Leclanche cell is also called Dry ?
construction working and uses of daniell cell
Calculate the quantity of charge in coulombs required to reduce 16.2 g of p-bezoquinone if current efficiency is75%.
Q. Explain the Molar Conductivity with weak and strong electrolytes ?
What are metallic conductors and electrolytic conductors?plz give examples also
What is the difference between galvanic cell & daniel cell?
The conductivity of 0.1 M solution of AgNO3 is 9.47 X 10-3 S cm-1 at 291 K. The ionic conductivities os Ag+ and NO3-at the same temperature are 55.7 and 50.8 Scm2equiv-1 respectively. Calculate the degree of dissociation of AgNO3 in 0.1 M solution. How to solve this and what's the meaning of ionic conductivities of the ions given here?
Calculate the potential of the half cell containing 0.10M K2Cr2O7, 0.20M Cr+2, and 1.0* 10-4M H+. The half cell reaction is
Cr2O7-2 +14 H++ 6e---------------- 2Cr+3 +7 H20
The standard electrode potential is given as 1.33V.???
1. 1 : 2 : 3 2. 3 : 2 : 1 3. 6 : 3 : 2 4. 3 : 4 : 2
1)wire of length 100m and cross sectional area 100m^2
2)wire of length 10m and cross sectional area 10m^2
3)one meter cube of a material
4)equal in all cases
Rate constant, K for first order reaction has been found to be 2.54*10 to the power -3 per sec. Calculate its three-fourth life.
The conductance of 0.1 M acetic acid at 298 K is 5.20 and that of 0.001 M acetic acid is 49.2. The ionic molar conductivity at infinite dilution of acetate and hydrogen ions are 349.8 and 40.9 S cm2 mol-1 resp. Calculate the degree of dissociation of acetic acid at these concentrations.
Sir, how to solve this.. and the conductances given in the first statement may be confused with conductivities because with dilution, it has decreased.. right sir?? or not??
for the reaction 3A(g)+B(g)=2C(g) at a given temperature,Kc=9.0 . what must be the volume of the flask, if a mixture of 2.0 mole each of A,B and C exist in equilibrium?
How to draw the resonating structures of H2SO4 and H2SO5 ???
can chlorine gas be stored in copper cylinder ? given electrode potential for(Cu2+/Cu)= 0.34V and electode potential for (Cl2/Cl-)=1.36V
Silver is electrodeposited on a metallic vessel of surface area 800 cm2 by passing
current of 0.2 A for 3 hours. Calculate the thickness of silver deposited.As per electrochemical series and on the basis of electrode potential values, identify the following:
(a) gas which has highest tendency for reduction.
(b) weakest oxidising ion.
What are the major topics of electrochemistry that can be asked in Chemistry Board Exam..
I mean.. right now it is no point studying this chapter from scratch.. there is?
What all should be studied in Electrochemistry for Chemistry Board?
Limiting molar conductivity of which is maximum in water at 298 K among the following
I)Cl-II)Br-
III)CH3COO-
IV)OH-
why is alternating current used instead of direct current in measuring electrolytic conduction ?
the blue colour of CuSO4 solutions is slowly discharged when a rod of zinc is dipped in it . explain..
calculate the equivalent conductance of 1 M h2so4 solution if its conductivity is 2.6x10 to the power -2 /ohm cm
give a test to distinguish b/w ethylamine and aniline ?
The metals that cannot be obtained by electrolysis of an aqueous solution of its salt is:
I) Ca
ii)Cu
iii)Cr
iv)Ag
state two advantages of (H2
O2) fuel cell over ordinary cell.answer it fastly!!!!!
1L of 1M aqueous solution of KMnO4 till after reduction; the final solution is 0.1M K2MnO4.
Student ‘Y’ electrolyzed 0.5L of 2M Ni (NO3)2 solution by passing a current of 9.65 A for three
hours between nickel electrodes. Student ‘Z’ electrolyzed NiSO4 solution by passing 12 A current
but the current efficiency was only 60%.
a) What will be the nickel deposited on the cathode per hour in the solution used by the
student ‘Z’?
b) What will be the molarity of the solution left after electrolysis used by student ‘Y’?
c) What will be the quantity of electricity used by the student ‘X’?
The molar conductivities at infinite dilution for NaI, CH3COONa and (CH3COO)2Mg are 12.69, 9.10 and 18.78 S m² mol−1. What is Λ°m for MgI2 ?
What is the name of these compound[Zn(NH3)2Cl2] ?
a voltanic cell is set up in 25 degre c Al|Al3+(0.001M) and Ni| Ni2+(0.50M) calculate cell voltage
ans -1.46v
Given E° (A2+ / A) = -2.37 V and E° (B2+ / B ) = -0.14 V
Pt, Cl2(1.5 bar) | 2Cl (0.01 M) ;
The resistance of a conductivity cell containing 0.001M KCl solution is 1500 ohm. What is the cell constant if conductivity of the solution at 298K is 0.000146 S/cm.
Cu does not dissolve in HCl but dissolves in nitric acid. Explain why?
- Mg(s) | Mg2+(aq)
- Ag(s) | Ag+ (aq)
The emf of the cell is 2.96 V at [Mg2+] = 0.130 M and [Ag+] = 1.0 * 10-4 M. Calculate the standard emg of the cell ( R = 8.3 JK-1 mol-1 , F = 96500 C )I am asking this question 2nd time soo plzz give me the answer this time.
Why mercury does not form amalgam with Iron?
Under what condition will a galvanic cell send no current into outer circuit?