A 10.00 mL sample of 0.30 M NH 3 is titrated with 0.45 M HNO 3 . Which statement

Question

A 10.00 mL sample of 0.30 M NH3 is titrated with 0.45 M HNO3. Which statement is true when 6.67 mL of titrant has been added to the analyte?

A. It is after the equivalence point, and the pH will be acidic.

B. It is before the equivalence point, and the pH will be 7.00.

C. It is at the equivalence point, and the pH will be basic.

D. It is before the equivalence point, and the pH will be basic.

E. It is at the equivalence point, and the pH will be 7.00.

F. It is after the equivalence point, and the pH will be 7.00.

G. It is before the equivalence point, and the pH will be acidic.

H. It is after the equivalence point, and the pH will be basic.

I. It is at the equivalence point, and the pH will be acidic.

Explanation / Answer

Answer;-

I.  It is at the equivalence point, and the pH will be acidic.

Because, M1V1 =M2V2

0.30 x 10 = 0.45 x 6.67

3.00 = 3.00

Ans NH3 gets converted to NH4+ , Which gives H+ on hydrolysis and gives acidic solution.

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