Question

To determine whether a rock sample is limestone (calcium carbonate), a geologist performs an acid test where they place several drops of hydrochloric acid on the stone. The geologist decides to perform this reaction in an open beaker. If the initial mass of all the reactants, including the beaker is 50 g. Would you expect the final mass of the mixture including the beaker to increase, decrease, or stay the same? Explain

Answer 1

Answer:

Decrease

Explanation:

When CaCO3 reacts with HCl, CO2 is formed in the gaseous state,

CaCO3 + HCl ----> CO2 (g) + CaCl2 + H2O

Since the beaker is open, the carbon dioxide escapes into air, thus reducing the total mass measured.

Answer 2

Answer:

see the picture for soln

see 2nd part if u r going in class 11