Chemistry·Prelims Questions

Equilibrium Constant from Nernst Equation — Prelims Questions

NEET UG
Updated 22 Mar 2026
Q1medium

For a redox reaction, the standard cell potential (EcellE^\circ_{cell}) is +0.32V+0.32\,\text{V} at 298K298\,\text{K}. If 4 electrons are transferred in the balanced reaction, what is the equilibrium constant (KcK_c) for this reaction?

Q2hard

The standard cell potential for the reaction 2Cr(s)+3Cd2+(aq)2Cr3+(aq)+3Cd(s)2Cr(s) + 3Cd^{2+}(aq) \rightarrow 2Cr^{3+}(aq) + 3Cd(s) is Ecell=+0.34VE^\circ_{cell} = +0.34\,\text{V} at 298K298\,\text{K}. What is the equilibrium constant (KcK_c) for this reaction?

Q3easy

Which of the following statements is TRUE regarding a galvanic cell at equilibrium?

Q4medium

If the equilibrium constant (KcK_c) for a reaction is 1.0×10101.0 \times 10^{-10} at 298K298\,\text{K} and n=2n=2, what is the standard cell potential (EcellE^\circ_{cell}) for this reaction?

Q5easy

For the reaction A(aq)+B(s)C(aq)+D(s)A(aq) + B(s) \rightleftharpoons C(aq) + D(s), the standard cell potential is EcellE^\circ_{cell}. At 310K310\,\text{K}, the equilibrium constant is KcK_c. Which of the following expressions correctly relates EcellE^\circ_{cell} and KcK_c at 310K310\,\text{K}?

Q6medium

A galvanic cell has a standard cell potential (EcellE^\circ_{cell}) of +0.80V+0.80\,\text{V} at 298K298\,\text{K}. If the reaction involves the transfer of 1 electron, calculate the equilibrium constant (KcK_c).