Multiple choice

Directions: Use the following information to answer the question.

According to Arrhenius concept, a stronger acid produces greater number of H+ ions in the aqueous solution and vice-versa.

A chemist has 0.01 M solution of each of NH4OH, Ca(OH)2, Al(OH)3 and NH2OH. Out of these, which is the strongest base?

  1. 0.01 M NH4OH

  2. 0.01 M Al(OH)3

  3. 0.01 M Ca(OH)2

  4. 0.01 M NH2OH
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

All these are weak bases and [OH–] in each of these compounds is given as follows: 0.01 M NH4OH = 0.01 M 0.01 M Al(OH)3 = 0.03 M 0.01 M Ca(OH)2 = 0.02 M 0.01 M NH2OH = 0.01 M

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