Some Basic Concepts Of Chemistry Question 264

Question: What will be the volume of $ CO _2 $ at NTP obtained on heating 10 grams of (90% pure) limestone [Pb. CET 2001]

Options:

A) 22.4 litre

B) 2.016 litre

C) 2.24 litre

D) 20.16 litre

Show Answer

Answer:

Correct Answer: B

Solution:

$ \underset{10gm}{\mathop{CaCO _3}},\to CaO+CO _2 $

90% pure 9gm $ =\frac{9}{100} $ mole $ CaCO _3\equiv CO _2=0.09 $ mole At NTP Vol. $ CO _2=0.09\times 22.4=2.016L $ .



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