Question:
$0.4\, g$ of dihydrogen is made to react with $7.1 \,g$ of dichlorine to form hydrogen chloride. The volume of hydrogen formed at $273\,K$ and $1$ bar pressure is
$0.4\, g$ of dihydrogen is made to react with $7.1 \,g$ of dichlorine to form hydrogen chloride. The volume of hydrogen formed at $273\,K$ and $1$ bar pressure is
Updated On: Aug 1, 2024
- 9.08L
- 4.54L
- 90.8L
- 45.4L
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The Correct Option is B
Solution and Explanation
The corresponding balanced reaction is:
$H _{2}+ Cl _{2} \rightarrow 2 HCl$
Again, $0.4 \,g H _{2}=0.4 / 2 \,mol =0.2 \,mol$
$7.1 \, g Cl _{2}=7.1 / 71 \,mol =0.1 \,mol$
So, $Cl _{2}$ is the limiting reagent here.
Hence $0.2$ moles of $HCl$ will be formed.
Again, we need to find out the volume of $HCl$ formed in the STP condition.
1 mol of gas in STP occupies $22.7 \, L$
Thus, $0.2$ mol of $HCl$ will occupy $=4.54 \, L$
$H _{2}+ Cl _{2} \rightarrow 2 HCl$
Again, $0.4 \,g H _{2}=0.4 / 2 \,mol =0.2 \,mol$
$7.1 \, g Cl _{2}=7.1 / 71 \,mol =0.1 \,mol$
So, $Cl _{2}$ is the limiting reagent here.
Hence $0.2$ moles of $HCl$ will be formed.
Again, we need to find out the volume of $HCl$ formed in the STP condition.
1 mol of gas in STP occupies $22.7 \, L$
Thus, $0.2$ mol of $HCl$ will occupy $=4.54 \, L$
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Chemistry is a vast subject and for understanding its significance we can take help of following points:
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- 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
- Liquids - have definite volume but not definite shape.
- Gases - have neither definite volume nor definite shape.
(B) Chemical Classification:
Based upon the composition, matter can be divided into two main types:
- Pure Substances are defined as a single substance (or matter) which cannot be separated by simple physical methods. Pure substances can be further classified as (i) Elements (ii) Compounds
- Mixtures are the combination of two or more elements or compounds which are not chemically combined together and may also be present in any proportion.