Concept explainers
Antacids Magnesium hydroxide is an ingredient in some antacids. Antacids react with excess hydrochloric acid in the stomach to relieve indigestion.
a. Balance the reaction of
b. Write the mole ratio that would be used to determine the number of moles of
(a)
Interpretation:
The balance chemical equation for the reaction of magnesium hydroxide with hydrochloric acid needs to be determined.
Concept introduction:
The mole concept provides the relation between moles, mass and molar mass. The mathematical expression of mole concept can be written as:
1 mole of any substance contains
Answer to Problem 53A
Explanation of Solution
The reaction of reaction of magnesium hydroxide with hydrochloric acid produces the magnesium chloride with water. The chemical formula of reactant and products are:
Magnesium hydroxide =
Hydrochloric acid = HCl
Magnesium chloride =
Water =
Thus, the balance chemical equation must be:
(b)
Interpretation:
The mole ratio to determine the number of moles of
Concept introduction:
A chemical reaction involves the conversion of certain molecules (reactant) to new substance (product) by bond breaking and making. One of the reactants, which is present in limited amount and determines the amount of product is known as limiting reactant. Whereas another reactant is known as excess reactant.
Answer to Problem 53A
Explanation of Solution
The balance chemical equation for the reaction of magnesium hydroxide with hydrochloric acid can write as:
The mole ratio relates the moles of reactant with other reactant and product molecules in the balance chemical equation. Thus, one mole ratio relates with other mole ratio. The mole ratio for
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