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  • Which of the following statements about carbon dioxide  is true?<div class='qna

Which of the following statements about carbon dioxide \mathrm{CO_{2}} is true?

Option: 1

\mathrm{CO_{2}} has a higher boiling point than methane.

 

 

 


Option: 2

\mathrm{CO_{2}} is more soluble in water at higher temperatures.
 


Option: 3

\mathrm{CO_{2}} is a polar molecule.

 


Option: 4

\mathrm{CO_{2}} can react with alkalis to form carbonates.


Answers (1)

best_answer

The correct answer is (4) \mathrm{CO_{2}} can react with alkalis to form carbonates. When carbon dioxide reacts with an alkali, such as sodium hydroxide, it forms a carbonate salt, such as sodium carbonate.  Hence option 4 is the correct answer.

Option (1) is incorrect because methane has a lower boiling point than \mathrm{CO_{2}} .   Hence option 1  is incorrect.

Option (2) is incorrect because \mathrm{CO_{2}} is more soluble in water at lower temperatures.  Hence option 2 is incorrect.

Option (3) is incorrect because \mathrm{CO_{2}}  is a nonpolar molecule. Hence option 3 is incorrect.

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