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प्रश्न
The pH of a solution of hydrochloric acid is 1.5. Calculate the concentration of the acid.
विकल्प
2.5 × 10–2 mol dm–3
0.28 mol dm–3
3.2 × 10–2 mol dm–3
0.0032 mol dm–3
MCQ
उत्तर
3.2 × 10–2 mol dm–3
Explanation:
pH = – log [H]+
1.5 = – log [H+]
[H+] = antilog 1.5 = 0.032
= 3.2 × 10–2 mol dm–3
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