Tag: further aspects of equilibria

Questions Related to further aspects of equilibria

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

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

  1. Increase

  2. Remains unchanged

  3. Decreases

  4. Some times increases or sometimes decrease

Show answer
Correct Option: C
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.