Chapter 6, Problem 145IP

The unknown acid H₂X can be neutralized completely by OH⁻ according to the following (unbalanced) equation:

$H_{2}X\left(aq\right)+O{H}^{-}\left(aq\right)\to X^2{}^{-}\left(aq\right)+H_{2}O\left(l\right)$

The ion formed as a product, X²⁻, was shown to have 36 total electrons. What is element X? Propose a name for H₂X. To completely neutralize a sample of H₂X, 35.6 mL of 0.175 M OH⁻ solution was required. What was the mass of the H₂X sample used?