marble
The metamorphic rock marble would react with hydrochloric acid.
Limestone is highly reactive to acid.
A rock that reacts with acid is composed to some extent of carbonate minerals such as calcite or dolomite.
Calcium carbonate, primarily. Recall that the conjugate acid of carbonate is bicarbonate, and the conjugate acid of bicarbonate is carbonic acid, which decomposes to water and carbon dioxide. So a...