It depends on what the question is!
-log(1.2 X 10^-5 M H(+)) = 4.9 pH H(+)
solution with [OH-] = 2.5 x 10-9 , A solution with [H+] = 1.2 x 10-4, A solution with pH = 4.5
24
2
h = -5 -7 * -5 = 35 A negative times a negative equals a positive.
-log(1.2 X 10^-5 M H(+)) = 4.9 pH H(+)
solution with [OH-] = 2.5 x 10-9 , A solution with [H+] = 1.2 x 10-4, A solution with pH = 4.5
5.6
It is a basic solution
1.15
6.15
apexvs answer 3.3
It's a simple linear equation in 'h' .Its solution is [ h = 4 ].
f = 54
24
7.8
1.15 (Apex)