Electrochemistry - Result Question 67

####15. Saturated solution of $KNO _3$ is used to make ‘salt-bridge’ because

(2001, 1M)

(a) velocity of $K^{+}$is greater than that of $NO _3^{-}$

(b) velocity of $NO _3^{-}$is greater than that of $K^{+}$

(c) velocities of both $K^{+}$and $NO _3^{-}$are nearly the same

(d) $KNO _3$ is highly soluble in water

Show Answer

Answer:

Correct Answer: 15. (c)

Solution:

  1. One of the requirement for electrolyte used in salt-bridge is, both cation and anion must have comparable size so that they migrate towards electrodes of opposite polarity at comparable speeds.


जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक