Civil Engineering - GATE Exam Questions - Discussion
Discussion Forum : GATE Exam Questions - Section 4 (Q.No. 45)
45.
Two samples of water A and B have pH values of 4.4 and 6.4 respectively. How many times more acidic sample A is than sample B ?
Discussion:
3 comments Page 1 of 1.
Naresharjun said:
5 years ago
PH of sample A = -log10(Ha+) = 10^-4.4,
PH of sample B = -log20(Hb+) = 10^-6.4,
PH A/PH B = 10^-4.4/10^-6.4 = 10^2 = 100.
PH A is 100 times acidic Than PH B.
PH of sample B = -log20(Hb+) = 10^-6.4,
PH A/PH B = 10^-4.4/10^-6.4 = 10^2 = 100.
PH A is 100 times acidic Than PH B.
(1)
Prakash said:
8 years ago
Please, explain the answer.
Sadashiva said:
9 years ago
10^-4.4/10^-6.4.
= 100.
= 100.
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