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Grade: 12th pass
        A gaseous mixture of S2 and co2 gas contain 66% mass of co2. the vapour density of the mixture :A. 6.1B. 5.4C. 2.7 D.  10.8
3 months ago

Answers : (1)

Arun
9288 Points
							
Dear Akash
 
H2 should be in place of S2. Otherwise this question is wrong according to the options.
 
Let total moles of mixture be 100g
Moles of CO2 = 66g
Then hydrogen will be = 34g
Number of moles of CO2=66/44=1.5
Numbsr of moles if H2=34/2=17
Total moles =1.5+17=18.5
Formula to be used:
Mavg= Total mass/ total moles
= 100/18.5=5.40
VAPOUR DENSITY= MAvg/2
=5.40/2=2.70
So, VAPOUR density of mixture is 2.7
 
 
 
Regards
Arun (askIITians forum expert)
3 months ago
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