Advertisements
Advertisements
Question
Arrange the following according to the instruction given in bracket:
C2H2, C3H6, CH4, C2H4 (In the increasing order of the molecular weight)
Solution
CH4 > C2H2 > C2H4 > C3H6
Explanation:
Molecular weight:
CH4 = 12 + 4 = 16
C2H2 = 12 × 2 + 2 × 1 = 26
C2H4 = 12 × 2 + 4 × 1 = 28
C3H6 = 12 × 3 + 6 × 1 = 42
APPEARS IN
RELATED QUESTIONS
A gaseous compound of nitrogen and hydrogen contains 12.5% hydrogen by mass. Find the molecular formula of the compound if its relative molecular mass is 37.
[N = 14, H = 1].
An organic compound with vapour density = 94 contains C = 12.67%, H = 2.13% and Br = 85.11%. Find the molecule formula.
[Atomic mass: C = 12, H = 1, Br = 80]
Calculate the mass of iron in 10 kg of iron ore which contains 80% of pure ferric oxide.
A gaseous hydrocarbon contains 82.76% of carbon. Given that its vapour density is 29, find its molecular formula.
A compound with empirical formula AB2 has the vapour density equal to its empirical formula weight. Find its molecular formula.
A hydrate of calcium sulphate CaSO4.xH2O contains 21% water of crystallization. Find the value of x.
A metal M forms a volatile chloride containing 65.5% chlorine. If the density of the chloride relative to hydrogen is 162.5, find the molecular formula of the chloride (M = 56).
Explain the term molecular formula.
On analysis, a substance was found to contain:
C = 54.54%, H = 9.09%, O = 36.36%
The vapour density of the substance is 44, calculate its molecular formula.
An organic compound, whose vapour density is 45, has the following percentage composition,
H = 2.22%, O = 71.19% and remaining carbon. Calculate its molecular formula.
