Arrange the following 0.10 MM solutions in order of increasing acidity: (i) NH4NO3NH4NO3, (ii) NaNO3NaNO3, (iii) CH3COONH4CH3COONH4, (iv) NaFNaF, (v) CH3COONa

Question

19-02-2020
Chemistry

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Arrange the following 0.10 MM solutions in order of increasing acidity: (i) NH4NO3NH4NO3, (ii) NaNO3NaNO3, (iii) CH3COONH4CH3COONH4, (iv) NaFNaF, (v) CH3COONa

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oeerivona oeerivona · Answer 1 · 2020-02-21T04:33:28+01:00

Answer:

The answer to the question is

In order of increasing acidity, we have

CH3COONa→NaF→NaNO3→CH3COONH4→NH4NO3

Explanation:

(i) NH4NO3 is an acidic salt as it consists of NH₃ and HNO₃. NH₃ is a weak base and HNO₃ is a strong acid pH = 5.4

(ii) NaNO3 PH7 produces a neutral solution when dissolved in water

(iii) CH3COONH4 Very concentrated solutions are acidic while low concentration 0.5 M are neutral, pH = 7

(iv) NaF basic as it is formed from weak acid and strong base. The strength of the basicity depends on the solution pH 7.4

(v) CH3COONa Basic in small concentration pH 8 or 9

Therefore we have in order of increasing acidity, CH3COONa→NaF→NaNO3→CH3COONH4→NH4NO3

pstnonsonjoku pstnonsonjoku · Answer 2 · 2021-12-30T12:16:11+01:00

The order increasing acidity of the solutions is; CH3COONa ≈ NaF < CH3COONH4 < NH4NO3.

An acidic solution is one whose pH lies between 0 to 6. A salt that undergoes hydrolysis to give an acid will have an acidic pH. Let us now consider the solutions to know which of them will give an acid solution.

The salt NH4NO3 will give an acid solution because its hydrolysis yields nitric acid
The salt CH3COONH4 yields a neutral solution
The salt NaF yields a basic solution because its hydrolysis yields NaOH.
The salt CH3COONa yields a basic solution since its hydrolysis yields NaOH.

The order increasing acidity of the solutions is; CH3COONa ≈ NaF < CH3COONH4 < NH4NO3.

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