Home›MPPSC Forest›State Forest Service Mains Exam›Section 'B': Forestry and General Science›UNIT-06: Chemistry›Acids and bases, pH scale (simple numerical questions), exothermic and endothermic reactions›What is the pH of a 0.001 M HCl solution?

What is the pH of a 0.001 M HCl solution?

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A.3Correct
B.4
C.5
D.None of the above
Explanation & Solution

Correct Answer: (A) 3

For a strong acid like HCl, [H^+] = concentration of the solution = 0.001 M = 10^-3 M. The pH is calculated as -log[H^+] = -log(10^-3) = 3.

हिंदी में प्रश्न एवं आदर्श उत्तर

0.001 M HCl विलयन का pH क्या है?

A.3सही
B.4
C.5
D.उपर्युक्त में से कोई नहीं

सही उत्तर: (A) 3

HCl जैसे प्रबल अम्ल के लिए, [H^+] विलयन की सांद्रता = 0.001 M = 10^-3 M है। pH की गणना -log[H^+] = -log(10^-3) = 3 के रूप में की जाती है।

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