Question

What is the [ H3O+] of a solution with pH = (8.50x10^0)? enter your answer in scientific notation and with three sig figs.

Answer 1

3.17 x 10^-9

Step-by-step explanation:

log 3.17 =.5 log 10^-9 =-9 .5+-9=-8.5 =pH 8.5

Answer 2

[H₃O⁺] = 3.162 × 10⁻⁹ moles / liter

Step-by-step explanation:

The pH is calculated with the formula:

pH = -lg[H₃O⁺]

From here the concentration of hydronium ion (H₃O⁺) will be:

[H₃O⁺] =
`10^(-pH)`

[H₃O⁺] =
`10^(-8.5)`

[H₃O⁺] = 3.162 × 10⁻⁹ moles / liter