A sample of ammonium phosphate (NH_4 )_3 PO_4 contains 3.18 moles of H -atom. The number of moles of O -atom in the sample is

Correct answer: (C) 1.06. Number of moles of O atoms =1/3 moles of H atoms =1/3 × 3.18=1.06 ~mol

Q26 / 200 · Manipal (MET) 2013 · Chemistry

A sample of ammonium phosphate $\left(\mathrm{NH}_4\right)_3 \mathrm{PO}_4$ contains 3.18 moles of H -atom. The number of moles of O -atom in the sample is

Number of moles of O atoms $=\frac{1}{3}$ moles of H atoms $=\frac{1}{3} \times 3.18=1.06 \mathrm{~mol}$

Hence, the correct answer is option: 'C'.