Acid question

[Awuah29]

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An aqoeus solution has H=4.10^-10
What is the OH-?
Don't get the answer that Topscore has 2.5x10^-5
Any Idea how to calculate ?
Thanks guys

 

[DrTacoElf]

An aqoeus solution has H=4.10^-10
What is the OH-?
Don't get the answer that Topscore has 2.5x10^-5
Any Idea how to calculate ?
Thanks guys

[H][OH] = 10-14

 

[konovsi]

(4x10^-10)(x)= 1X10^-14
x=1X10^-14/4X10^-10
x=.25 X 10^-4 or 2.5 x 10^-5