Which is the most basic solution?

Which is the most basic solution?

 

1) pH = 11

2) pOH = 12

3) pOH = 2

4) [OH-] = 10^-4 mol/L

5) [H+] = 10^-4 mol/L

 

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pH가 높을수록 더 강한 염기성 용액.

전부 pH 값으로 나타낸 후 비교하면,

 

 

1) pH = 11

 

2) pOH = 12

pH = 14 – pOH = 2

( 계산 설명 http://ywpop.tistory.com/2706 )

 

3) pOH = 2

pH = 14 – pOH = 12

 

4) [OH-] = 10^-4 mol/L

pH = 14 - (-log(10^(-4))) = 10

 

5) [H+] = 10^-4 mol/L

pH = -log(10^(-4)) = 4

 

 

답: 3) pOH = 2