To make the reaction happen faster, all of the following suggestions could be effective:
- Add more antacid - Increasing the concentration of the reactant can lead to a higher reaction rate.
- Add a catalyst - A catalyst can speed up a reaction without being consumed in the process by lowering the activation energy required for the reaction to occur.
- Increase the pressure in the container - For reactions involving gases, increasing the pressure can increase the concentration of the reactants, thus speeding up the reaction.
- Increase the surface area of the antacid by crushing it - Smaller particle sizes lead to greater surface area, allowing more collisions between reactants, which can speed up the reaction.
Therefore, the correct answer is ALL of the above. Each of these methods can contribute to an increase in the rate of the reaction.