Sodium sulphate has the formula Na2SO4. Atomic masses of Na, S and oxygen are 23, 32 and 16 respectively. Using these data choose the incorrect Statement among the following.
A. One mole of sodium sulphate contains two moles of sodium, one mole of sulphur and few moles of oxygen atoms.
B. One mole of sodium sulphate contains 12.046 × 1023 atoms of sodium.
C. The mass percentage of sodium, sulphur and oxygen are 45.07, 32.39 and 22.54% respectively.
D. The molar mass of sodium sulphate is 142 g mol-1.
Answer:C
Sodium sulphate has the formula Na2SO4. Atomic masses of Na, S and oxygen are 23, 32 and 16 respectively. Using these data choose the incorrect Statement among the following.
A. One mole of sodium sulphate contains two moles of sodium, one mole of sulphur and few moles of oxygen atoms. B. One mole of sodium sulphate contains 12.046 × 1023 atoms of sodium. C. The mass percentage of sodium, sulphur and oxygen are 45.07, 32.39 and 22.54% respectively. D. The molar mass of sodium sulphate is 142 g mol-1.