JAMB Chemistry 2017 Objective — Question 22

Question 22 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2017 Objective paper, with the correct answer and a full explanation.

In the diagram, X is

A. A. SO3
B. B. SO2Correct
C. C. S
D. D. H2S

Explanation

In the reaction Na2SO3 + 2HCl → 2NaCl + H2O + SO2, gas X evolved is sulphur (IV) oxide, SO2.

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