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Define cell constant. How is it related to conductivity.?
what is debye huckel onsagers equation?
what is salt bridge?
explain its function?
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
Calculate the potential of hydrogen electrode in contact with a solution whose pH is 10.
Why does a dry cell become dead after a long time even if it has not been used?
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.
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
what is the difference between E cell and E0 cell??
electrolysis of KBr gives Br2 at anode but KF does not give F2. Why?
what is redox couple
why does mercury cell give a constant voltage throughout its life?
The emf of the cell Zn|Zn2+(0.1 M)||Cd2+(M1)|Cd has been found to be 0.3305 V at 298 K.
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?
At 298 K, molar conductivities at infinite dilution of NH4Cl, NaOH and NaCl are
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
Cu does not dissolve in HCl but dissolves in nitric acid. Explain why?
Predict the products of electrolysis in each of the folloiwng:
What is the factors affecting electrode potential ?
construction working and uses of daniell cell
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.???
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 ?
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.
what are the factors affecting ionic conductance???
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 :
calculate the equivalent conductance of 1 M h2so4 solution if its conductivity is 2.6x10 to the power -2 /ohm cm
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 ???
the blue colour of CuSO4 solutions is slowly discharged when a rod of zinc is dipped in it . explain..
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?
why is alternating current used instead of direct current in measuring electrolytic conduction ?
Explain why zinc dissolved in dilute HCl to liberate hydrogen gas but from concentrated H2SO4 the gas evolved is SO2?
give a test to distinguish b/w ethylamine and aniline ?
THE MOLAR CONDUCTANCE OF 0.01N. SOLUTION OF H2SO4 AT 298 K IS 420 Scmsquare mol-1. calculate the resistance of the solution if the electrodes in the cell are 2cm apart having area of cross section 4cmsquare?
how we will solve this question ? BY USING WHICH FORMULA?
The metals that cannot be obtained by electrolysis of an aqueous solution of its salt is:
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.
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
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.
Why mercury does not form amalgam with Iron?
can Fe 3+ oxidise Br- to Br2 under standard conditions ?
How does electrochemical series help us in predicting whether a redox reaction is feasible in a given direction or not.
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