Why the weight of the bangle was reduced drastically?
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20
Answer:
The solution used by the goldsmith was aqua-regia solution which contains concentrated nitric acid and concentrated hydrochloric acid in the ratio 1:3. When the gold bangles were dipped into this solution, considerable amount of gold was dissolved in it. Thus the weight of the bangle was reduced.
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3
Answer:
Since the outer layer of gold dissolved in aqua regia. So the weight of bangle reduced
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