Sorbic acid ( C x H y O z ) , commonly used as a mold inhibitor in cheese, undergoes complete combustion. When 11.2 g of sorbic acid is burned, an initial decrease in gas volume of 2.27 L is obs

Question

Sorbic acid ( C x ​ H y ​ O z ​ ) , commonly used as a mold inhibitor in cheese, undergoes complete combustion. When 11.2 g of sorbic acid is burned, an initial decrease in gas volume of 2.27 L is observed. The combustion gases are then passed through a KOH solution at STP, resulting in a further volume contraction of 13.62 L . If each molecule of sorbic acid contains 6 carbon atoms. On the basis of above information which of the following statements is correct ?

TestHub · Accepted Answer

C₆HᵧO₂ + ( 6 + y /4 − z /2 ) O₂ → 6CO₂ + y /2 H₂O t = 0 11.2/M ( 6 + y /4 − z /2 ) 11.2/ M t=t - - 6 × 11.2/ M ​ 6 × M 11.2 ​ = 13.62 = 0.6 M = 112 g m / m o l ( 6 + 4 y ​ − 2 z ​ ) × 0.1 − 0.6 = 0.1 6 + 4 y ​ − 2 z ​ = 7 4 y ​ − 2 z ​ = 1 12 × 6 + y + 16 z = 112 16 z + y = 40 ( y − 2 z = 4 ) × 8 9 y = 72 y = 8 z = 2 ​

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