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Answer 1 · 2017-03-28T07:32:17

#8.00*g# of what? Sodium hydroxide?

We can guess that you mean #"1 US gallon"-=3.785*L#. We cannot guess the solute. Would you review this question?

If the solute is sodium hydroxide, then,

#[NaOH]="Moles of NaOH"/"Volume"#

#=((8.00*g)/(40.00*g*mol^-1))/(1.0*"gallons"xx3.785*L*"gallon"^-1)#

#5.28xx10^-2*mol*L^-1# with respect to #NaOH#.

So #[Na^+]=[HO^-]=5.28xx10^-2*mol*L^-1#.

What is the #pH# of this solution?