Question

identify the oxidation and reduction agents in the following reaction .

(a) magnesium oxide react with sodium to give sodium oxide and magnesium

(b) potassium react with aluminium chloride to give aluminium chloride and potassium

(c) magnesium oxide reacts with hydrochloric acid to give magnesium chloride , chlorine and water​

Answer 1

Answer:

• identify the oxidation and reduction agents in the following reaction .
• (a) magnesium oxide react with sodium to give sodium oxide and magnesium
• (b) potassium react with aluminium chloride to give aluminium chloride and potassium
• (c) magnesium oxide reacts with hydrochloric acid to give magnesium chloride , chlorine and water

Explanation:

• According to basic chemistry, oxidation reactions are those when a substrate is oxidized by an oxidant so that atoms of the substrate increase their oxidation numbers while atoms of the oxidant are reduced.
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Answer 2

(a) Magnesium Ribbon is heated in the presence of air to form a white powder called magnesium oxide.

(b) When dilute sulphuric acid is poured over zinc granules (i) there will be a rise in temperature (ii) evolution of hydrogen gas.

(c) (i) A yellow precipitate is formed.

(ii) There will be a change in color (from colourless to yellow).

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