Question

pH of tomato juice is 4.4. Then concentration of
H3O+ will be :-
(1) 39 x 10-4
(2) 3.9 x 10-5
(3) 3.9 x 10-4
(4) 3.9 x 105 ​

Answer 1

Answer: $3.9\times 10^{-5}$

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydronium ion concentration.

Acids have pH ranging from 1 to 6.9, bases have pH ranging from 7.1 to 14 and neutral solutions have pH equal to 7.

$pH=-\log [H_3O^+]$

Given: pH = 4.4

Putting in the values:

$4.4=-\log[H_3O^+]$

$[H_3O^+]=antilog(-4.4)$

$[H_3O^+]=3.9\times 10^{-5}$

Thus the concentration of  $H_3O^+$ will be $3.9\times 10^{-5}$

Answer 2

Answer:

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