Question

A. Answer the following questions based on the laboratory preparation of
Carbon monoxide. [5]
i. Give the balanced equation for the preparation of the gas.
ii. How is the gas collected and why?
iii. What do you observe when the gas burns in air?
iv. What is its effect to litmus?

Answer 1

ANS 1- CaCO3+2HCl→CaCl2+H2O+CO2.

ANS 2-Collection of CO from Methanoic acid: Dehydration of a methanoic salt like sodium methanoate is helpful within the assortment of CO. Pour concentrated sulfuric acid directly onto the solid. The carbon monoxide gas that evolves is collected underneath the water. ... Then in this atmosphere let CO react with oxygen

ANS 3- Carbon monoxide does support combustion and burns with a pale blue flame.

ANS 4- Because,the carbon monoxide reacts with the water present in the litmus, which generates carbonic acid. Due to the acidity of the generated carbonic acid,the litmus paper turns red

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