NTSE Stage 2 SAT 2018 Exam Question Paper

Question : 22 of 100

Marks: +1, -0

How many grams of oxygen gas will be needed for complete combustion of 2 moles of 3 rd member of alkyne series ?

Solution:

2C_4H_6+11O_2→8CO_2+6H_2O

For 2 moles of hydrocarbon, 11 moles of

O_2

is required
∴ 11 moles

=11×32=352g

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