NCERT Class 12 Chemistry General Awareness Questions and Answers
91 NH4NC>3 is used in salt bridge because
Answer: the transport number of NH4+ and NO3– ions are almost equal.
92 limiting molar conductivity of Ca2+ and Cl– are 119.0 and 76.3 S cm2 mol-1, then the value of limiting molar conductivity of CaCl2 will be
Answer: 271.6 S cm2 mol-1
96 Colloidion is 4% solution of which one of the following in alcohol-ether mixture.
98 Λ of M/32 solution of weak acid is 8 S cm2 mol-1 and limiting molar conductivity is 400 S cm2 mol1. Ka for acid is
Answer: 1.25 × 10-5