Verified Answer :

you're moving two steps from 7 to 5 (10 x10 = 100), so 100 times more protons would be the appropriate response.

Answer:

A solution with a pH of 5 has\(9.9\times 10^{-6} M\) more protons in it than a solution with a pH of 7.

Explanation:

The pH of the solution is negative logarithm of  hydrogen ion concatenation in the aqueous solution. Mathematically written as:

\(pH=-\log [H^+]\)

1) A solution with a pH of 5 :

\(5=-\log[H^+]\)

\([H^+]=10^{-5} M\)

2) A solution with a pH of 7 :

\(7=-\log[H^+]'\)

\([H^+]'=10^{-7} M\)

\([H^+]>[H^+]'\)

Difference in concentration of hydrogen ions or protons in both solutions:

\([H^+]-[H^+]'=10^{-5}M-10^{-7} M=9.9\times 10^{-6} M\)