Acidity of ammonium hydroxide is _______(A) 1(B) 2(C) 4(D) 3

The acidity of ammonium hydroxide (NH4OH) can be represented by the following equation:

NH4OH ⇌ NH4+ + OH-

Ammonium hydroxide is a weak base, meaning it partially dissociates in water to produce ammonium ions (NH4+) and hydroxide ions (OH-). Since it is a weak base, it does not completely dissociate, and its acidity is relatively low.

The acidity of a solution is measured by its pH value, which is the negative logarithm of the concentration of hydrogen ions (H+) in the solution. A lower pH value indicates higher acidity.

The pH value of ammonium hydroxide solution is around 11. This means that it is slightly basic, not acidic. None of the options provided (A, B, C, D) is correct for the acidity of ammonium hydroxide. If you are looking for the pH value, the closest option is (C) 4, but it's not entirely accurate.

Please note that (A) 1, (B) 2, (C) 4, and (D) 3 are not correct choices for the acidity of ammonium hydroxide.