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Define cell constant. How is it related to conductivity.?
Cu does not dissolve in HCl but dissolves in nitric acid. Explain why?
what is debye huckel onsagers equation?
what is salt bridge?
explain its function?
Calculate the potential of hydrogen electrode in contact with a solution whose pH is 10.
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 ?
Why does a dry cell become dead after a long time even if it has not been used?
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 discharge potential ?
calculate the limiting molar conductivity of CaSO4.given(molar conductivity of calcium-119.0 Scm square per mol and molar conductivity of sulphate 160.0 S cm square per mol
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 the difference among E0cell , Ecell, emf and potential difference....explain
how to find the value of "n" for nernst equation from a cell equation or chemical reaction in a cell?
what is redox couple
The standard reduction potential values of three metal cations X, Y
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
Predict the products of electrolysis in each of the folloiwng:
A first order gas reaction A2B2 gives 2A(g)+2B(g) at the temperature 400C has the rate constant K=20*10 to the power -4 per sec. What % of A2B2 is decomposed on heating for 900 second?
What is the factors affecting electrode potential ?
what are the factors affecting ionic conductance???
construction working and uses of daniell cell
At 298 K, molar conductivities at infinite dilution of NH4Cl, NaOH and NaCl are
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?
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.
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?
Write the Nernst equation and calculate the emf of the following cell at 298 K.
Cu (s) / Cu++ ( 0.130 M) // Ag+ ( 1.0× 10-4 M) / Ag (s) given : E Cu++ / Cu = 0.34V and E Ag+/Ag = 0.80V
How to draw the resonating structures of H2SO4 and H2SO5 ???
Silver is electrodeposited on a metallic vessel of surface area 800 cm2 by passing
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?
Is salt bridge required for lead storage cell? why?
why is alternating current used instead of direct current in measuring electrolytic conduction ?
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 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??
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!!!!!
What is the EMF of the Cell when the cell reaction attains equilibrium ?- (1 MARKS) - [URGENT ANSWER NEEDED]
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.
The emf of the cell Zn|Zn2+(0.1 M)||Cd2+(M1)|Cd has been found to be 0.3305 V at 298 K.
Why mercury does not form amalgam with Iron?
an external opposite potential is applied to the galvanic cell and increased slowly till opposing potential reaches 1.1 V. What does opposite potential mean ?
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Syllabus
Define cell constant. How is it related to conductivity.?
Cu does not dissolve in HCl but dissolves in nitric acid. Explain why?
what is debye huckel onsagers equation?
(1) 1.59g (2) 3.18g
(3) 6.35g (4) 12.70g
what is salt bridge?
explain its function?
Calculate the potential of hydrogen electrode in contact with a solution whose pH is 10.
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 ?
Why does a dry cell become dead after a long time even if it has not been used?
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 discharge potential ?
calculate the limiting molar conductivity of CaSO4.given(molar conductivity of calcium-119.0 Scm square per mol and molar conductivity of sulphate 160.0 S cm square per mol
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 the difference among E0cell , Ecell, emf and potential difference....explain
how to find the value of "n" for nernst equation from a cell equation or chemical reaction in a cell?
what is redox couple
The standard reduction potential values of three metal cations X, Y
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
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
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 electrodesA first order gas reaction A2B2 gives 2A(g)+2B(g) at the temperature 400C has the rate constant K=20*10 to the power -4 per sec. What % of A2B2 is decomposed on heating for 900 second?
- 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.
What is the factors affecting electrode potential ?
what are the factors affecting ionic conductance???
(A) 3 x 105 (B) 9 x 105 (C) 4.5 x 105 (D) 5.16 x 105
construction working and uses of daniell cell
At 298 K, molar conductivities at infinite dilution of NH4Cl, NaOH and NaCl are
129.8, 217.4 and 108.9 ohm-1 cm2 respectively. If molar conductivity ofcentinormal solution of NH4OH is 9.33 ohm-1 cm2, what is the degree ofdissociation if NH4OH solution?Q. Explain the Molar Conductivity with weak and strong electrolytes ?
What are metallic conductors and electrolytic conductors?plz give examples also
(A) The water produced during the reaction can be used as drinking water.
(B) Cathode and anode of a hydrogen-oxygen fuel cell are porous and are made of carbon.
(C) H2 and O2 are bubbled through porous electrodes into concentrated sulphuric acid solution.
(D) Pt or Pd metals are incorporated into the electrodes to increase electrode reactions.
What is the difference between galvanic cell & daniel cell?
i. Calculate the potential of the following cell reaction at 298 K.
ii.The standard potential E of the cell is 0.89 V. Whether the potential of cell will increase or decrease if concentration of Sn4+ is increased in the cell
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
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.
Ni | Ni ^ 2+ || Ag^+ | Ag
calculate the equilibrium constant at 25 degree Celsius. How much maximum work would be obtained by operation of the cell?
Eo(Ni 2+/Ni= -0.25V), Eo(Ag +/Ag=0.80V)
(1) + 1.48 (2) + 1.39 V (3) + 1.36 V (4) +1.42 V
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?
Write the Nernst equation and calculate the emf of the following cell at 298 K.
Cu (s) / Cu++ ( 0.130 M) // Ag+ ( 1.0× 10-4 M) / Ag (s) given : E Cu++ / Cu = 0.34V and E Ag+/Ag = 0.80V
How to draw the resonating structures of H2SO4 and H2SO5 ???
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.(i) an electrolyte, KCl, is added to a hydrated ferric oxide sol.
(ii) an electric current is passed through a colloidal solution.
(iii) a beam of strong light is passed through a colloidal solution.
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?
Is salt bridge required for lead storage cell? why?
why is alternating current used instead of direct current in measuring electrolytic conduction ?
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 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??
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!!!!!
Mg (s) | Mg2+ (aq) || Ag+ (aq) | Ag (s)
What is the EMF of the Cell when the cell reaction attains equilibrium ?- (1 MARKS) - [URGENT ANSWER NEEDED]
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
Q8. When a concentrated solution of an electrolyte is diluted, its
(1) Specific conductance increases
(2) Equivalent conductance decreases
(3) Specific conductance decreases and equivalent
(4) Both specific and equivalent conductance increase
Given E° (A2+ / A) = -2.37 V and E° (B2+ / B ) = -0.14 V
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.
The emf of the cell Zn|Zn2+(0.1 M)||Cd2+(M1)|Cd has been found to be 0.3305 V at 298 K.
Why mercury does not form amalgam with Iron?
an external opposite potential is applied to the galvanic cell and increased slowly till opposing potential reaches 1.1 V. What does opposite potential mean ?
Q. Fill in the blanks:
As concentration of an electrolyte solution increases, its ______ conductance increases but ______ conductance decreases.