Question

A marble chip has a mass of 2.0 grams before being immersed in vinegar overnight. The chip isremoved and dried the next day.What will the mass of the dried marble chip be?​

Answer 1

Answer:

It will be less than 2 grams

Explanation:

Marble (CaCO3) reacts with vinegar (an acid) to form calcium acetate and water.

This dissolves the marble chip and reduces its mass.

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Answer 2

The mass of the marble chip will be less than 2.0 grams.

Explanation:

• In the given scenario two substances are involved namely marble chip and vinegar.
• The chemical formula of marble chip and vinegar are $CaCO_3$ and $CH_3COOH$ respectively.
• As one of the reactants is carbonate whereas the other is acid, the reaction occurs and it leads to the formation of a new compound called calcium acetate.
• The equation involved in the reaction is as follows:

$CaCO_3 + 2CH_3COOH \rightarrow Ca(CH_3COO)_2 + H_2O + CO_2$

• When the marble chip is immersed in the vinegar overnight, the above-mentioned reaction occurs and the weight of the marble chip will definitely get reduced.
• Thus the mass of the marble chip will be less than 2.0 grams.

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