AP EAMCET · Chemistry · Electrochemistry
A saturated solution of \(\mathrm{KNO}_3\) with agar-agar is used to make a 'salt-bridge' because
- A size of \(\mathrm{K}^{+}\)is greater than that of \(\mathrm{NO}_3^{-}\)
- B velocity of \(\mathrm{NO}_3^{-}\)is greater than that of \(\mathrm{K}^{+}\)
- C velocities of \(\mathrm{K}^{+}\)and \(\mathrm{NO}_3^{-}\)are nearly the same
- D Both velocities and sizes of \(\mathrm{K}^{+}\)and \(\mathrm{NO}_3^{-}\)are nearly the same
Answer & Solution
Correct Answer
(C) velocities of \(\mathrm{K}^{+}\)and \(\mathrm{NO}_3^{-}\)are nearly the same
Step-by-step Solution
Detailed explanation
\(\mathrm{KNO}_3\) is used in salt bridge because velocity of \(\mathrm{K}^{+}\)and \(\mathrm{NO}_3^{-}\)ions is same due to which ions do not accumulate.
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