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A saturated solution of KNO ₃ with agar-agar is used to make a 'salt-bridge' because

Options

  1. Asize of K ⁺ is greater than that of NO ₃⁻
  2. Bvelocity of NO ₃⁻ is greater than that of K ⁺
  3. Cvelocities of K ⁺ and NO ₃⁻ are nearly the same
  4. DBoth velocities and sizes of K ⁺ and NO ₃⁻ are nearly the same

Correct answer

C. velocities of K ⁺ and NO ₃⁻ are nearly the same

Step-by-step solution

KNO ₃ is used in salt bridge because velocity of K ⁺ and NO ₃⁻ ions is same due to which ions do not accumulate.

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