In a compound C, H and N atoms are present as 9%, 1%, 3.5% respectively. Molecular weight of compound is 108. Molecular formula of compound is (a) C H N (b) C H N (c) C H N (d) C H N

Element Percentage Moles of atoms Simplest ratio C 9 9 3 12 4 3 H 1 1 1 1 4 N 3.5 3.5 1 14 4 1 Empirical formula 3 4 C H N 65 MOLE & EQUIVALENT CONCEPT 3 4 108, 12 3 4 1 14 108 n n C H N x x 108 54 108 2 54 n n >> molecular formula 6 8 2 C H N