HELP!! In an experiment, calcium carbonate reacted with different volumes of hydrochloric acid in water. One of the products formed during the experiment was carbon dioxide. The time taken for 0.89 mL of carbon dioxide to form was recorded. A partial record of the experiment is shown.

Based on your knowledge of factors that affect the rates of chemical reactions, predict the trend in the last column of the experimental record. Use complete sentences to explain the trend you predicted. You do not have to determine exact values for time; just describe the trend you would expect (increase or decrease) and why it occurs.

See explanation

Explanation:

The rate of reaction depends on the concentration of reactants. As the concentration of reactants increases, the rate of reaction increases and vice versa.

This derives from the collision theory. As the concentration of reactants increases, more particles collide with each other effectively leading to reaction.

If we look at the table, we will notice that the concentration of reactants is decreasing as less acid and more water is used.

The rate of reaction is shown by the time taken for the CO2 gas to evolve. As the concentration of reactants decrease, the time taken for the CO2 gas to evolve(which is a measure of the rate of reaction) increases steadily.

Hence, the last column is expected to increase steadily.

the answers would be

the first one and the second one