What should you do during a titration when you notice the indicator start to indicate the approach of the equilibrium point? add the second reactant faster. add the second reactant slower. add more indicator.

Add the second reactant faster.

Explanation:

In titration we take, we take a reactant (titrand) in conical flask. The second reactant (titrant) is filled in burette.

Now we add indicator in the first reactant (taken in flask) and start adding the second reactant from burette.

The reaction starts and when it appears that we are approaching the end point, we start adding the second reactant slower, in order to avoid missing the end point. If we add the second reactant fast, it may lead to addition of excess of reagent and thus may affect our calculations and readings.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.