Home Chemistry Some Basic Concepts of Chemistry The Mole Concept Generally commercial hydrochloric acid is pr…
Chemistry Some Basic Concepts of Chemistry The Mole Concept Single Correct MCQ
Published on: August 14, 2026

Generally commercial hydrochloric acid is prepared by heating NaCl with concentrated H 2 SO 4 . How much H 2 SO 4 solution containing 93.0% H 2 SO 4 by mass is required for the production of 1000 kg of concentrated hydrochloric acid containing 43% HCl by weight.

A
590.0 kg solution of H 2 SO 4 .
B
310.3 kg solution of H 2 SO 4 .
C
620.7 kg solution of H 2 SO 4 .
D
708.2 kg solution of H 2 SO 4 .

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Text Solution

Verified by Experts
The correct answer is:
C

Mass of HCl = 1000 × = 430 kg.

2NaCl + H 2 SO 4 Na 2 SO 4 + 2HCl

=

= mole of H 2 SO 4

Mass of H 2 SO 4 = = 577.26 × 10 3 g

Mass of 93% H 2 SO 4 = 577.26 × = 620.71 kg.

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