Answer
This is a gas formation reaction.
Work Step by Step
As we can analyze, we have 2 ionic compounds (salts) ($NaCl + NaHSO_4$) producing a gas $(HCl)$; therefore, this is a gas-forming reaction.
Chemistry: The Molecular Science (5th Edition)
by Moore, John W.; Stanitski, Conrad L.
Published by
Cengage Learning
ISBN 10:
1285199049
ISBN 13:
978-1-28519-904-7
Chapter 3 - Chemical Reactions - Questions for Review and Thought - General Questions - Page 148g: 107d
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