Answer to Question #66809 in Inorganic Chemistry for kesandu

Question #66809
20cm3 of a gaseous hydrocarbon x were exploded with 120cm3 of oxygen. After the explosion the volume of the gases remaining was 90cm3 and this decreased to 50cm3 on treatment with aqueous potassium hydroxide. calculate the molecular formula of X
1
Expert's answer
2017-03-28T02:11:07-0400
If after the reaction remains O₂ and CO₂, that their volume has 90sm²

90-50=40sm³Progressed with alkali

50sm³(O₂) stay

120-50=70sm³(O₂)progressed

2CxHy+7O₂->4CO₂+H₂O The coefficients are the ratios of gas volumes

20(CxHy):70(O₂);40(CO₂)

The oxygen equation

2CxHy+7O₂->4CO₂+6H₂O

X=2;y=6

C₂H₆ - ethane

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Comments

Assignment Expert
29.03.17, 16:07

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Kesandu
29.03.17, 06:40

That was cool

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