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 Chemistry Question

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 which of the following molecules is hydrogen bridge bond present
  2. Which of the following trivalent ion has the largest atomic radii
  3. Which of the following is a redox reaction
  4. If pH of a saturated solution of Ba(OH)₂ is 12, the value of its Ksp is
  5. Which of the following oxides is amphoteric in character?

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.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*