Look at the diagram of an experiment shown here and answer the questions.
Figure

(a) What are the reactants?
(b) Name the gas that is evolved in this reaction.
(c) Write a balanced chemical equation for this reaction.

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Solution

(a) The reactants are calcium and dilute hydrochloric acid.
(b) Hydrogen is the gas evolved in this reaction.

(c) The balanced chemical equation is:

$2Ca + dil . 2HCl \overset{}{\to} {CaCl}_{2} + H_{2} Calcium Hydrochloric acid Calcium chloride Hydrogen gas$

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Look at the diagram of an experiment shown here and answer the questions. Figure (a) What are the reactants? (b) Name the gas that is evolved in this reaction. (c) Write a balanced chemical equation for this reaction.

(a) The reactants are calcium and dilute hydrochloric acid. (b) Hydrogen is the gas evolved in this reaction. (c) The balanced chemical equation is: 2Ca + dil. 2HCl → CaCl2 + H2Calcium Hydrochloric acid Calcium chloride Hydrogen gas

Look at the diagram of an experiment shown here and answer the questions.
Figure

(a) What are the reactants?
(b) Name the gas that is evolved in this reaction.
(c) Write a balanced chemical equation for this reaction.

(a) The reactants are calcium and dilute hydrochloric acid.
(b) Hydrogen is the gas evolved in this reaction.

(c) The balanced chemical equation is:

$2Ca + dil . 2HCl \overset{}{\to} {CaCl}_{2} + H_{2} Calcium Hydrochloric acid Calcium chloride Hydrogen gas$