Question

When vinegar is added to marble chips (calcium carbonate), bubbles of the gas are produced. What is the gas form and how can it be identified? for grade 7.

Answer 1

CH3COOH+ CaCO3 --- CH3COOCa + H2O +CO2

CO2 gas is produced which can be tested by passing it through calcium hydroxide, if it turns milky white, then it is CO2!

mark it as Brainliest!

Answer 2

Answer:

• Vinegar is also known to as acetic acid and the ‘chemical formula’ of it is $\mathrm{CH}_{3} \mathrm{COOH}$
• The chemical formula for calcium carbonate is $\mathrm{CaCO}_{3}$. When vinegar is added to marble chips (calcium carbonate), bubbles of the gas are produced.

It is shown by the below balanced equation:  

$\mathrm{CH}_{3}\mathrm{COOH}+\mathrm{CaCO}_{3}$ = $\mathrm{Ca}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2}$ + $\mathrm{CO}_{2}$ + $\mathrm{H}_{2} \mathrm{O}$

• From the above equation we can infer that the gas produced during the reaction is Carbon-di-Oxide gas and the water molecules and calcium acetic are also produced. It can be identified when clear liquid is seen.