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24 June, 11:53

The chemical reaction in which solid calcium oxide is treated liquid water is an example of what: A) decomposition B) combustion reaction C) single replacement D) synthesis E) double replacement

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  1. 24 June, 13:34
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    The chemical reaction in which solid calcium oxide is treated liquid water is an example of Synthesis reaction. Hence, the answer is (D) Synthesis.

    Explanation:

    The formula of Calcium Oxide is CaO.

    The formula of liquid water is H₂O.

    Calcium Oxide reacts with water and forms Calcium Hydroxide. The Chemical equation is shown below.

    CaO + H₂O - -> Ca (OH) ₂.

    This is a Synthesis reaction because Ca (OH) ₂ is synthesized by using Calcium Oxide and water.

    The product of this reaction is calcium hydroxide, also known as slaked lime.

    Thus, when calcium oxide reacts with water, slaked lime is produced.

    Calcium oxide is also known as lime and is most commonly used for many purposes. It can be used for pH correction of water or for its disinfection (with excess lime).
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