Lessons

Eamcet Chemistry
1st Year : Unit 1.4 (Basics & Concepts) - Stoichiometric Calculations

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Q.

Benzene burns in oxygen according to the equation 2C6 H6(1) + 15O2(g) →12CO2(g) + 6H2O(1). How many litres of oxygen are required at STP for the complete combustion of 39g of liquid benzene?

View Answer

Correct choice: D

Explanation:

2C6 H6(1) + 15O2(g) → 12CO2(g) + 6H2 O(1).
2moles i.e 2X78=156 gmof Benzene requires 15X22.4 lit of oxygen at STP
39 gm of Benzene requires (39X15X22.4/156)= 84 lit of oxygen at STP
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