Looking for classes? Ksquare Career Institute, Bengaluru →
Some Basic Concepts of Chemistry
Empirical Formula from Percentage Composition
1 question from 1 paper, each with its answer.
- question
- 1
- paper
- 1
- years asked, 2017–2026
- 1 of 10
- of Some Basic Concepts of Chemistry
- 2.04%
Concepts tested
- Calculating empirical formula from mass percent and atomic mass
All Questions
2024 1 question
-
A compound X contains 32% of A, 20% of B and remaining percentage of C. Then, the empirical formula of X is: (Given atomic masses of A = 64; B = 40; C = 32u)Percentage of C = 100 $-$ 32 $-$ 20 = 48% A: $\frac{32}{64} = \frac{1}{2}$ ; B: $\frac{20}{40} = \frac{1}{2}$ ; C: $\frac{48}{32} = \frac{3}{2}$ Simplest ratio A : B : C = 1 : 1 : 3 Empirical formula = $ABC_3$