What is the pH of the solution in which the [H+] is 1.0 × 10–4 mol/L ?
PLEASE HELP ONLY ONE IM STUCK ON!!!!!

Question

What is the pH of the solution in which the [H+] is 1.0 × 10–4 mol/L ?
PLEASE HELP ONLY ONE IM STUCK ON!!!!!

aaronq · Answer

pH = -log[H+]

anonymous · Answer

10? right

aaronq · Answer

nope,  1.0x10^-7 -> pH=7 

so anything of greater [H+] should be more acidic, meaning lower than 7

anonymous · Answer

A. 4.00	

B. 14.00	

C. 1.00	

D. 10.00	were my options?

aaronq · Answer

take the negative logarithm of the [H+] with your calculator

anonymous · Answer

still lost but thanks

aaronq · Answer

plug into your calculator 0.0001

then press log

then press the negative sign or multiply by -1

anonymous · Answer

gettin neg 4 not positive

aaronq · Answer

did you press the negative sign or multiply by -1?

the answer is 4

anonymous · Answer

i mulitiplied thats y i take it ty