A solution of nickel sulphate in which nickel rod is dipped is diluted 10 times.

⇦

⇨

A solution of nickel sulphate in which nickel rod is dipped is diluted 10 times. the reduction potential of Ni at 298 K

Options

(a) decreases by 60 mV
(b) decreases by 30 mV
(c) decreases by 30 V
(d) increases by 30 mV

Correct Answer:

decreases by 30 mV

Explanation:

Let the initial concentration of Ni²⁺ = a. Since the solution is diluted 10 times, its concentration = a/10. Applying Nernst equation, E = E⁰ – 0.0591/2 log a /a/10. E = E⁰ – 0.030(log 10) ⇒ E = E⁰ – 0.030. Therefore the reduction potential of Ni decreases by 30 mV.

Related Questions:

1. In liquid-gas equilibrium,the pressure of vapours above the liquid is constant
2. p-Nitrobromobenzene can be converted to p-nitroaniline by using NaNH₂.
3. Which one of the following statements is not true
4. Which of the following is formed, when benzaldehyde reacts with alcoholic KCN
5. For a given exothermic reaction, Kp and K’p are the equilibrium constants

Topics: Electrochemistry and Chemical Kinetics (87)
Subject: Chemistry (2512)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends