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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.

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DrMantisToboggan

Answer:

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.

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