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SOHAN SARANGI Grade: 12
        

Compute the pH of a solution at 25 degree centigrade which is twice as alkaline as pure water

6 years ago

Answers : (1)

vikas askiitian expert
510 Points
										

ph of water = 7


concentration of [OH-] = 10-7


concentration of [OH-] in the solution  = 2*10-7                     (2 times alkaline than water)


total OH- in sol is 10-7  + 2*10-7 =3*10-7


[H+] = 10-14/3*10-7 = 3.33*10-8


PH = -log3.33*10-8 =8 - log3.33 = 7.5 approx

6 years ago
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