alleryHow many HBr molecules must 1,2-dibromoethane lose to form ethyne?
AFour
BTwo
CThree
DOne
Answer & Solution
Correct answer: B. Two
Converting C2H4Br2 to C2H2 removes two hydrogen atoms and two bromine atoms as two HBr molecules.
Keep practising Organic Chemistry: introduction and hydrocarbons
Browse all Organic Chemistry: introduction and hydrocarbons questions for ICSE Class 10, or explore more Chemistry topics.
Related questions
How many carbon atoms form benzene's ring?Which pair differs in double-bond position within the same carbon chain?Which carbon skeleton is branched?All four H atoms in CH4 are replaced by Cl. How many HCl form per CH4?One H atom of ethane is replaced by Cl. What organic product forms?Which condition promotes methane's substitution by chlorine?What is the smallest O2 coefficient in 2C2H6 + O2 → 4CO2 + 6H2O?Complete combustion of methane forms which pair?