help@askiitians.com

+91-87964 74404

Grade 12th passPhysical Chemistry

(i) The standard oxidation potential Eo with respect to Standard Hydrogen Electrode (SHE) for half cell reactions are: Zn = Zn2+ + 2e; Eo = +0.76 V and Fe = Fe2+ + 2e-; Eo = + 0.41 V. Find out the standard EMF of the cell reaction: Fe2+ + Zn = Zn2+ + Fe with respect to Calomel electrode (CE) where standard reduction potential of CE is 0.2415V (with respect to SHE)

sai kiran

11 Years agoGrade 12th pass

1 Answer

Suraj Prasad

11 Years ago

See Fe2+ is changing to Fe---> Reduction E = -0.41
and Zn is changing to Zn2+ ---> Oxidation E = +0.76

So net E = 0.76-0.41 = 0.35

now if you want to find wrt Calomel electrode then it will be 0.35-0.2415 =0.1085 V

Which of the following aqueous solutions remains neutral after
electrolysis

physical chemistry

0 Answer Available

Last Activity: 3 Years ago

In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???

physical chemistry

1 Answer Available

Last Activity: 3 Years ago

True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2

physical chemistry

1 Answer Available

Last Activity: 3 Years ago

18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture

physical chemistry

1 Answer Available

Last Activity: 4 Years ago

A 100 cm cube solution of sodium carbonate is prepared by dissolving 8.653 g of salt in water the density of solution is 1.0816g per ml what are the molarity and molality of the solution.

physical chemistry

1 Answer Available

Last Activity: 4 Years ago

View all Questions