no of oxygen atom presenr in So2 gas is equal to no. of oxygen atoms present in 4g so3 gas find mass and Vol of So2 gas
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Class 12
>>Chemistry
>>The p-Block Elements
>>Ozone
>>The number of oxygen atoms in 20 gm of s
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The number of oxygen atoms in 20 gm of sulphur tri-oxide SO
3
is the same as these present in x gms of Ozone. The atomic mass of sulphur and oxygen are 32 μ and 16 μ respectively. Find the value of μ. (12 gm)
Medium
Solution
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Molar mass of the sulpheric trioxide is 32+2×16=80g/mol
Number of grams of O in 80g/mol in SO
3
=48g
Number of grams of O in 20g/mol in SO
3
=
80
48
×20
=12g
Number of moles in 12 oxygen=
16
12
=0.75
No of atoms in 0.75 moles of oxygen is
0.75×6.0×10
23
=4.515×10
23
Now, The molar mass of the Ozone is O
3
=3×16=48g
Since 6.02×10
23
atoms make 48g Ozone 4.515×10
23
atoms make
=
6.022×10
23
48
×4.515×10
23
=36g of Ozone
the same as these present in x gms of Ozone. The atomic mass of sulphur and oxygen are 32 μ and 16 μ respectively. Find the value of μ. (12 gm)
Medium
Solution
Molar mass of the sulpheric trioxide is 32+2×16=80g/mol
=36g of Ozone