The benesi-hildebrand method is like a special trick that scientists use to measure how much of a certain substance is in a mixture.
Let's pretend you have a big bowl of chocolate chip cookies, but you want to know exactly how many chocolate chips are in them. First, you take some of the cookies and grind them up into tiny pieces. Then, you mix those crumbs with a special chemical that reacts with the chocolate chips.
The chemical is like a special lock that only fits the chocolate chip key. When the lock and key fit together, they make a signal that tells you how many chocolate chips there are in the crumbs. Scientists can use special tools to measure the amount of signal and figure out how much chocolate is in the whole bowl of cookies.
In the same way, the benesi-hildebrand method uses special chemicals and light signals to measure substances in solutions. It's like they're trying to count how many chocolate chips are in a big bowl of batter by using a special lock and key that only fits that ingredient. By measuring the signals that the lock and key make, scientists can figure out how much of that ingredient is in the solution.