Chemistry, asked by harif786adis, 1 year ago

Give one standard test for carbon dioxide . Also write the equation involved. Is it a physical or
chemical change?

Answers

Answered by prayashi09
2
If the gas turns lime water milky ,then the gas is CO2
CaOH2+CO2--->CaCO3+H2O
It is a chemical change

kitkat67: in which standard do you study?
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prayashi09: class 10
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Answered by Lalit2911
4
Ca(OH)2 +CO2 =CaCO3 (white ppt)+H2O
To check the presence of CO2 pass it through lime solution, if it turns milky then it shows presence of CO2.
Or just direct the gas to a burning candle,if the candle blows off ,
It again shows presence of CO2 as it acts as an extinguisher .
Hope it helped.
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