How many grams of H20 are produced from the reaction of 30.0g of Mg(OH)2 reacting with HCI?

Mg(OH)2 + 2HCl --> 2H20 + MgCl2

The mass of water required is 18.52 g

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

......(1)

Given mass of magnesium hydroxide = 30.0 g

Molar mass of magnesium hydroxide = 58.32 g/mol

Plugging values in equation 1:

The given chemical equation follows:

By the stoichiometry of the reaction:

If 1 mole of magnesium hydroxide produces 2 moles of water

So, 0.5144 moles of magnesium hydroxide will react with = of water

Molar mass of water = 18 g/mol

Plugging values in equation 1:

Hence, the mass of water required is 18.52 g

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