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kykrilka [37]
3 years ago
6

Which of the following is an oxidation-reduction reaction?

Chemistry
1 answer:
KiRa [710]3 years ago
3 0

C₆H₁₂O₆ + 6 O₂ ⇒ 6 CO₂ + 6 H₂O

This is an oxidation-reduction reaction, because oxidation numbers of carbon and oxygen atoms are different than before reaction.

(-_-(-_-)-_-)

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Explanation:

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How do I answer and do this
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a) When the reaction takes place a yellow precipitate will be formed.

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a) When a lead nitrate solution is mixed with a potassium chromate solution, a yellow precipitate containing lead forms according to the equation:

Pb(NO_3)_2 (aq) + K_2CrO_4 (aq) → 2 KNO_3 (aq) + PbCrO_4(s).

b) Law of conservation of mass for the given reaction is true.

From the given table we know the mass of reactants and its products.

Law of conservation of mass is a principle when a reaction takes place in a closed system, the mass of the products and reactants in the system doesn't change.

⇒The sum of the mass of the reactants = The sum of the mass of the products.

The sum of the reactants = 128.71+128.97.

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The sum of the products = 154.10+103.58.

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Thus law of conservation of mass is true for the above reaction.

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