I think it might be a gas was formed.
Hope I'm right and it helps you out!!
It's A
a. the electron configuration of a noble gas.
I think B is the correct answer
<span>H3PO4 --> H+ + H2PO4 1-
H2PO4 1- --> H+ + HPO4 2-
HPO4 2- --> H+ + PO4 3-
Ka1 = [H+][H2PO4 1-] / [H3PO4]
Ka2 = [H+][HPO4 2-] / [H2PO4 1-]
Ka3 = [H+][PO4 3-] / [HPO4 2-</span>
1 ounces ----------- 29.5735 mL
5 ounces ----------- ??
5 x 29.5735 / 1 => 147.868 mL
hope this helps!