Question

When treated with excess hydrogen gas under catalytic condition, X mol of a certain hydrocarbon absorbed 11.2 L of hydrogen gas (measured at s.t.p). Which of the following is CORRECT? X = 0.25; the hydrocarbon is an alkene with two double bonds X = 1; the hydrocarbon is an alkyne with two triple bonds O X = 0.5; the hydrocarbon is an alkyne with one triple bond X = 0.5; the hydrocarbon is an alkene with two double bond X = 1; the hydrocarbon is an alkene with one double bond

Answer 1

Comment in case of any doubt.

11.2L 0.5mal 22.4 L/mol) STP Moles of H₂ absorbed at volume of a mot of gas Now, I double bond requires the molecule and I tripple bond requieres a te molecules >c=ck eft H-H 3 HH act LC=c- H H o = 0.25X2 = X Lets check the given options: For X= 0.25 and tura double bonds, the required 0.50 ml, so this option is correct For x=2, 2 tripple bonds - the required = X QX 2 = 4 mas So, false. a tripple bonds ata per False trupple bond X=0.5, a double bonds : Ha required False -0.5x2x2 = x=1, I double bond : He required= )x1= 1 mo False Hence Ist option from top is correct. X = 0.5, one tripple bond, Hi evequired = 0.5x 2 = 1 na 2 mal