Some Basic Concepts Of Chemistry Question 177
Question: Assuming fully decomposed, the volume of $ CO _2 $ released at STP on heating 9.85g of $ BaCO _3 $ (Atomic mass of Ba=137) will be [CBSE PMT 2000]
Options:
A) 0.84 L
B) 2.24 L
C) 4.06 L
D) 1.12 L
Show Answer
Answer:
Correct Answer: D
Solution:
$ BaCO _3\to BaO+CO _2\uparrow $
Molecular weight of $ BaCO _3=137+12+3\times 16 $ =197 $ \because $ 197gm produces 22.4L at S.T.P.
$ \therefore $ 9.85gm produces $ \frac{22.4}{197}\times 9.85=1.12L $ at S.T.P.
