Question

Determine the empirical formula for the compound with the molecular formula B,CI. empirical formula: Determine the empiricalformula for the compound with the molecular formula N, B, H, empirical formula:

Answer 1

1)
Molecular formula given is B2Cl4
In Molecular formula,
coefficient of B = 2
coefficient of Cl = 4

Highest common factor of 2 and 4 is 2

So,
In empirical formula,
Coefficient of B = 2/2 = 1
Coefficient of Cl = 4/2 = 2

Empirical formula is BCl2

Answer: BCl2

2)
Molecular formula given is N3B3H12
In Molecular formula,
coefficient of N = 3
coefficient of B = 3
coefficient of H = 12

Highest common factor of 3, 3 and 12 is 3

So,
In empirical formula,
coefficient of N = 3/3=1
coefficient of B = 3/3=1
coefficient of H = 12/3=4

Empirical formula is NBH4

Answer: NBH4