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1. Write a balanced chemical equation for each of the following reactions and also classify them.
(b) A piece of sodium metal is added to absolute ethanol to form sodium ethoxide and hydrogen gas.
A piece of sodium metal is added to absolute ethanol to form sodium ethoxide and hydrogen gas. The more active sodium displaces hydrogen in ethanol in this reaction.
The balanced chemical equation for the statement is
\(2Na\) + \(2C_2H_5OH\) → .
2. Balance the following chemical equations and identify the type of chemical reaction.
(b) \(HgO\)(s) \(\xrightarrow[]{Heat}\) \(Hg\)(l) + \(O_2\)(g)
In the above equation, when mercury oxide (\(HgO\)) is heated, it decomposes (reduced) into mercury (\(Hg\)) and oxygen (\(O_2\)). Therefore this is a thermal reaction as well as reduction.
The balanced chemical equation for the statement is
\(2HgO\)(s) \(\xrightarrow[]{Heat}\) .
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