The number of hydrogen ions would equal the number of hydroxide ions in a solution with a ph of

The correct answer for the blank is-

pH of 7.

There can be primarily three types of aqueous solution depending upon the pH value ( which represents the acidity or basicity of the solution). A pH scale ranges from 1 to 14.

The pH value 7 relates to neutral solution, above 7 is for basic solutions  and below 7 shows solution is acidic.

Neutral solution means the hydrogen ion concentration is equal to the concentration of hydroxide ions.

Example of neutral solution- Water

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme