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AP EAMCET · Chemistry · Some Basic Concepts of Chemistry

The volume of \(0.1 \mathrm{M} \mathrm{HCl}\) required in \(\mathrm{mL}\) to neutralise \(20 \mathrm{~mL}\) of a solution containing \(0.106 \mathrm{~g}\) of \(\mathrm{Na}_2 \mathrm{CO}_3\) is

  1. A 10
  2. B 5
  3. C 20
  4. D 40
Verified Solution

Answer & Solution

Correct Answer

(C) 20

Step-by-step Solution

Detailed explanation

Given, Molarity \((\mathrm{HCl})\left[M_1\right]=0.1 \mathrm{M}\) Volume of \(\mathrm{Na}_2 \mathrm{CO}_3\) used \(=20 \mathrm{~mL}\) Mass of \(\mathrm{Na}_2 \mathrm{CO}_3\) used \(=0.106 \mathrm{~g}\) thus, molarity \(\left(M_2\right)\) of…