Tag: further aspects of equilibria

Quizzes (4) Questions (91)

Questions Related to further aspects of equilibria

Multiple choice chemistry further aspects of equilibria dissociation constants ionisation of weak acids and weak bases ionization constants of weak acids and weak bases

Basic strength of $NH _{4}OH$   in presence of $NH _{4}CI$  

  1. Increase

  2. Remains unchanged

  3. Decreases

  4. Some times increases or sometimes decrease
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

While the NH4OH is weak base it does not ionises completely. Thus due to presence of common ion NH4+ in NH4Cl, it supresses the ionisation of weak base NH4OH in order to decrease the OH-concentration so that higher group cations will not get precipitated.