SOLUTION: pH = -log10[H+] Find the [H+] if the pH = 8.4. Possible answer: a. 3.98 x 10-8 b. 2.51 x 10-8 c. 3.98 x 10-9 d. 2.51 x 10-9

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: pH = -log10[H+] Find the [H+] if the pH = 8.4. Possible answer: a. 3.98 x 10-8 b. 2.51 x 10-8 c. 3.98 x 10-9 d. 2.51 x 10-9      Log On


   

Question 1046634: pH = -log10[H+] Find the [H+] if the pH = 8.4.
Possible answer:
a. 3.98 x 10-8
b. 2.51 x 10-8
c. 3.98 x 10-9
d. 2.51 x 10-9
Found 2 solutions by josgarithmetic, stanbon:
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
pH=-log%2810%2CH%29, if the H is understood as [H+]

-log%2810%2CH%29=8.4

log%2810%2CH%29=-8.4

H=10%5E%28-8.4%29

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
pH = -log10[H+] Find the [H+] if the pH = 8.4.
8.4 = -log10[H+]
H+ = 10^-8.4 = 3.9811*10^-9
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Cheers,
Stan H.
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Possible answer:
a. 3.98 x 10-8
b. 2.51 x 10-8
c. 3.98 x 10-9
d. 2.51 x 10-9