7. calculate the h+ of a solution with an ph of 6. a. write the formula you will use. ____________ b…

Explanation:

Step1: Recall pH formula

The formula to calculate the hydrogen - ion concentration $[H^+]$ from pH is $[H^+]=10^{-pH}$.

Step2: Substitute pH value

Given pH = 6, substitute into the formula: $[H^+]=10^{-6}\ M$.

Step3: Answer part c

The pH is already given as 6 in the problem statement.

Step4: Determine acid or base

Since pH = 6 which is less than 7, the solution is an acid.

Answer:

a. $[H^+]=10^{-pH}$ b. $[H^+]=10^{-6}\ M$ c. 6 d. Acid