Question

Which of the following will have same % composition of element with that of ethyne ?

(a) Ethane (b) Ethene (c) Benzene(C6H6

) (d) Methane​

Answer 1

Answer:

(a) Molecular mass of methane , (CH

4

)=12+4=16u

(b) Molecular mass of ethane , (C

2

H

6

)=2×12+6×1=30u

(c) Molecular mass of ethene , (C

2

H

4

)=2×12+4×1=28u

(d) Molecular mass of ethyne (C

2

H

2

)=2×12+2×1=26u