When 280. mL of 1.50 * 10⁻⁴ M hydrochloric acid is added to 135 mL of 1.75 * 10⁻⁴ M Mg (OH) ₂, the resulting solution will be?

a) acidic

b) basic

c) neutral

d) it is impossible to tell from the information given.

B is the correct answer!

Explanation:

Balanced equation is Mg (OH) 2 + 2 HCl = MgCl2 + 2 H2O

HCl is the limiting reactant because it gives the smaller amount of MgCl2 I did the math. This means you will be left with Mg (OH) 2 since HCl completely runs out.

If HCl is the limiting reactant, Mg (OH) 2 is the excess reactant.

Mg (OH) 2 is a base, so the solution will be basic.