Question:
Assuming fully decomposed, the volume of $CO_2$ released at STP on heating 9.85 g of $BaCO_3$ (at. mass of Ba = 137) will be
Assuming fully decomposed, the volume of $CO_2$ released at STP on heating 9.85 g of $BaCO_3$ (at. mass of Ba = 137) will be
Updated On: May 5, 2024
- 1.12 L
- 0.84 L
- 2.24 L
- 4.96 L
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The Correct Option is A
Solution and Explanation
The correct answer is A:1.12 L
On decomposition, \(BaCO_3\) liberates \(CO_2\) as
\(_{197 g}^{BaCO_3} \, \, \, \, \, \rightarrow BaO +_{22.4 L \, at \, STP }^{ \, \, \, \, \, \, CO_2 \uparrow}\)
\(\therefore \, \, 197 g \, of \, BaCO_3 \, gives \, = 22.4 L \, of\, CO_2 \, at \, STP\)
\(\therefore 9.85 \, g \, of \, BaCO_3 \, will \, give\, = \frac {22.4 \times 9.85}{197} = 1.12 L\)
On decomposition, \(BaCO_3\) liberates \(CO_2\) as
\(_{197 g}^{BaCO_3} \, \, \, \, \, \rightarrow BaO +_{22.4 L \, at \, STP }^{ \, \, \, \, \, \, CO_2 \uparrow}\)
\(\therefore \, \, 197 g \, of \, BaCO_3 \, gives \, = 22.4 L \, of\, CO_2 \, at \, STP\)
\(\therefore 9.85 \, g \, of \, BaCO_3 \, will \, give\, = \frac {22.4 \times 9.85}{197} = 1.12 L\)
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Chemistry is a vast subject and for understanding its significance we can take help of following points:
- Chemistry plays an important role in understanding various subjects like physics, geology and biology.
- Chemistry is a core branch of science that explains us about the various compositional properties and interaction of matter. It also helps to understand various chemical reactions.
- Chemistry is important in order to understand the behaviour of fertilizers, alkenes, acids, salts, dyes, polymers, drugs, soaps and alloys in organic and inorganic chemistry.
- Chemistry plays an important role in various fields like healthcare, industrial, research, food, and farm activities.
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Classification of Matter
There are two ways of classifying the matter:
(A) Physical Classification:
Matter can exist in three physical states:
- Solids - have definite volume and definite shape
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- Gases - have neither definite volume nor definite shape.
(B) Chemical Classification:
Based upon the composition, matter can be divided into two main types:
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