Question

What is the [H3O+] of a solution with pOH= (5.30x10^0)? Enter your answer in scientific notation and three sig figs.

Answer 1

Answer:

$\boxed{5.01\times 10^{-9}\text{ mol/L}}$

Explanation:

pOH = 5.30

  pH = 14.00 - 5.30 = 8.70

  pH = -log[H₃O⁺]

$\begin{array}{rcl}[\text{H}_{3}\text{O}^{+}] & = & 10^{- \text{pH}} \text{ mol/L}\\ & = & 10^{-8.30}\text{ mol/L}\\ & = &\boxed{\mathbf{5.01\times 10^{-9}}\textbf{ mol/L}}\\\end{array}$