Question

31. Write a balanced chemical equation for each of the following reactions and als
classify them.
(i) A piece of sodium metal is added to absolute ethanol to form sodium ethoxide
hydrogen gas.
(ii) Hydrogen sulphide gas reacts with oxygen gas to form solid sulphur and liquid wat
otrio​

Answer 1

Answer:

1.=Sodium metal (Na) reacts with ethanol (C2H5OH) to produce sodium ethoxide (C2H5ONa) and hydrogen (H2). It is a displacement reaction in which the more active sodium displaces hydrogen in ethanol. The equation can be written as: 2Na+2C2H5OH→2C2H5ONa+H2

Hydrogen sulphide (H

2

S) reacts with oxygen (O

2

) to form solid sulphur (S) and water(H

2

O). It is a redox reaction as both oxidation of hydrogen sulphide to sulphur and reduction of oxygen to water takes place. The equation can be written as:

2H

2

S+O

2

→2S+2H

2

O

Explanation:

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