Question

One day reeta went to a jewellery shop with her mother her mother gave an old gold jewellery to the goldsmith to polish.Next day when they brought the jewellery back,they found that there was a slight loss in its weight.can you suggest a reasons for the loss in weight?​

Answer 1

Answer:

To polish a gold ornament, it is dipped in a liquid called aquaregia (a mixture of hydrochloric acid and nitric acid). On getting the environment of aquaregia, the outer layer of gold dissolves and the inner shiny layer appears. The dissolving of the layer causes a reduction in the weight of the jewellery..

Answer 2

Explanation:

• In the jeweler’s shop, to polish gold jewelry it is dipped in an acid called Aqua Regia.
• Aqua Regia dissolves the outer layer of gold.
• So, the inner shiny layer is visible.
• As there is a loss of the outer layer there is a slight loss in its weight.

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