Question

Which of the following is not a redox reaction?

1)Burning of magnesium ribbon is air


2)Addition of dilute hydrochloric acid to zinc granules


3)Addition of silver nitrate to sodium chloride


4)Release of energy during respiration

please help me... ^_^​

Answer 1

Answer:

correct answer is option4 because we know redox reaction means both oxidation and reduction during cellular respiration some molecules will be oxidized and some reduced

Answer 2

The addition of silver nitrate to sodium chloride is not a redox reaction.

• Redox is a type of chemical reaction in which electrons are transferred between two reactants participating in the reaction process.
• Redox reaction can be either oxidation or reduction.
• The oxidation reaction is the loss of electrons or an increase in the oxidation state of a chemical or atoms within it.
• Reduction is the gain of electrons or a decrease in the oxidation state of a chemical or atoms within it.
• When a magnesium ribbon burns in the air with a dazzling flame it forms white ash, magnesium is oxidised because oxygen is added to magnesium.
• When dilute hydrochloric acid is added to granulated zinc, zinc metal is converted to zinc chloride and hydrogen gas is evolved in the reaction.
• The addition of silver nitrate to sodium chloride is a precipitation reaction in which precipitation of silver chloride takes place.
• Respiration is a redox reaction as it is a metabolic reaction, where there is both loss and gain of electrons.

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