Question

If the pH of rain water is 4.35, the [H30]+ in it will be
(a) 4.5 x 10-5 M
(b) 6.5 x 10-5 M
(c) 9.5 x 10-3 M
(d) 12.5×10-3 M

Answer 1

Answer:

pH=-log[H3O+]

4.35=-log[H3O+]

log[H3O+]=-4.35

[H30+]=-antilog4.35

          =4.5 x 10-5 M

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Answer 2

If the pH of rain water is 4.35, the [H30]+ in it will be

(a) 4.5 x 10-5 M

(b) 6.5 x 10-5 M

(c) 9.5 x 10-3 M

(d) 12.5×10-3 M

Answer is*A*