5.1 Give reasons for the following:

(a) Silver earrings darken after a period of time.

(b) Copper vessels are coated with tin to increase their lifespan.

Question

17-07-2024
Chemistry

Answered

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5.1 Give reasons for the following:

(a) Silver earrings darken after a period of time.

(b) Copper vessels are coated with tin to increase their lifespan.

Sagot :

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GinnyAnswer GinnyAnswer · Answer 1 · 2024-07-17T10:02:58-04:00

Final answer:

Silver tarnishes due to hydrogen sulfide, and tin coating on copper vessels prevents corrosion and extends durability.

Explanation:

(a) Silver earrings darken after a period of time: Silver tarnishes in the presence of substances like hydrogen sulfide in the air, forming a layer of silver sulfide which gives the metal a darker appearance.

(b) Copper vessels are coated with tin to increase their lifespan: Coating copper vessels with tin helps prevent corrosion and extends their durability by creating a barrier between the copper and the surrounding environment, reducing the chances of oxidation.

Learn more about Tarnishing and coating of metals here:

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