Question

The pH of a fruit juice is 5.3 Find the hydronium ion concentration [H3O+] of the juice. Use the formula pH = -log[H30+]

Answer 1

Answer:

$\lbrack H_3O^+\rbrack\text{ = }5.0\text{ }\times10^{-6\text{ }}moles\text{ per liter}$

Explanation:

By definition, the pH of a solution is the negative logarithm to base 10 of the concentration of Hydroxonium or oxonium ion

Mathematically, we have this as:

$pH=-log\lbrack H_3O^+\rbrack_{}$

We can change the formula subject so we would have hydroxonium ion on the left

Mathematically, we have this as:

$\lbrack H_3O^+\rbrack\text{ = ANTILOG (-pH)}$

Finally, we have the calculation as follows:

$\lbrack H_3O^+\rbrack\text{ = antilog(-5.3) = }0.000005011872$

In the scientific form,we have this as:

$5.0\text{ }\times10^{-6\text{ }}moles\text{ per liter}$