Concept explainers
(a)
Interpretation: To write the balanced chemical equation of the reaction of formation of calcium hydride from calcium and
Concept introduction: The reaction of elements with hydrogen produces either ionic metal hydrides or molecular compounds. The reaction of hydrogen with metals produces ionic metal hydrides. The electronegativity of hydrogen is more than metals and hence, metals bear positive charge and hydrogen has a negative charge. Thus, the oxidation number of hydrogen in ionic metal hydrides is
The reaction of calcium and hydrogen forms calcium hydride. The reaction occurs at
(b)
Interpretation: To write the balanced chemical equation of the reaction of calcium hydride with water.
Concept introduction: The reaction of elements with hydrogen produces either ionic metal hydrides or molecular compounds. The reaction of hydrogen with metals produces ionic metal hydrides. The electronegativity of hydrogen is more than metals and hence, metals bear positive charge and hydrogen has a negative charge. Thus, the oxidation number of hydrogen in ionic metal hydrides is
The reaction of calcium and hydrogen forms calcium hydride. The reaction occurs at
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Chapter 21 Solutions
Chemistry & Chemical Reactivity
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