What does the ph of solution measure?
a. color
b. acidity
c. temperature
d. volume

*apex*

Answer : The correct option is, (B) Acidity

Explanation :

pH : It is defined as the negative logarithm of the hydrogen ion or hydronium ion concentration.

Mathematically, it is represented as,

pH of the solution measures the acidity and basicity of a substance.

The pH range for acidic solution is, 0.1 to 6.9

The pH range for basic solution is, 7.1 to 14

For neutral solution the pH is, 7

Hence, the pH of solution measure the acidity.

I  believe the answer is B. an enzyme

Explanation:

the substrates attach to the active site of an enzyme.