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Define cell constant. How is it related to conductivity.?
Explain why zinc dissolved in dilute HCl to liberate hydrogen gas but from concentrated H2SO4 the gas evolved is SO2?
what is debye huckel onsagers equation?
Cu does not dissolve in HCl but dissolves in nitric acid. Explain why?
what is salt bridge?
explain its function?
limitations of standard hydrogen electrode
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?
When a conductivity cell was filled with 0.02 M KCl, it had a resistance of 82.4 ohm at 250C and when filled with 0.005 N K2SO4, it had a resistance of 326 ohm. Calculate :
what is discharge potential ?
the blue colour of CuSO4 solutions is slowly discharged when a rod of zinc is dipped in it . explain..
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.
At 298 K, molar conductivities at infinite dilution of NH4Cl, NaOH and NaCl are
what is the difference between E cell and E0 cell??
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
what is redox couple
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-
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
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
Predict the products of electrolysis in each of the folloiwng:
calculate equilibrium constant for reaction at 298 k.zn+cu2+gives zn2+ +cu given that Eo zn2+/zn=0.76v Eo cu2+/cu + 0.34v.
What is the factors affecting electrode potential ?
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.???
The emf of the cell Zn|Zn2+(0.1 M)||Cd2+(M1)|Cd has been found to be 0.3305 V at 298 K.
construction working and uses of daniell cell
a voltaic cell is set up at 25degree celcius with the half cellsAg+ (0.001M) I Ag and Cu 2+(0.10M) I Cuwhat should be its cell potential?
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 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
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.
How does electrochemical series help us in predicting whether a redox reaction is feasible in a given direction 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 ???
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.
Silver is electrodeposited on a metallic vessel of surface area 800 cm2 by passing
can chlorine gas be stored in copper cylinder ? given electrode potential for(Cu2+/Cu)= 0.34V and electode potential for (Cl2/Cl-)=1.36V
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?
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
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.
give a test to distinguish b/w ethylamine and aniline ?
calculate the strength of current required to deposit 1.2 gm of magnesium from molten mgcl2 in 1 hr
The metals that cannot be obtained by electrolysis of an aqueous solution of its salt is:
state two advantages of (H2
answer it fastly!!!!!
a voltanic cell is set up in 25 degre c Al|Al3+(0.001M) and Ni| Ni2+(0.50M) calculate cell voltage
what is nickel- cadmium cell?state its merit and demerit over lead storage cell.a)write the overall reaction that occurs during discharge of thhe cell.
Why mercury does not form amalgam with Iron?
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