ICSE 1999 : SCIENCE Paper 2 (Chemistry) - Question 5(a) Answer the following.

SCIENCE
Paper 2 (Chemistry) - 1999
(One hour and a half)

Question 5
(a) Concentrated nitric acid oxidises phosphorus to phosphoric acid according to the following equation:
P + 5HNO₃ ——-> H₃PO₄ + H₂O + 5NO₂

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1.
(i) What mass of phosphoric acid can be prepared from 6.2 g of phosphorus?

2.
(ii) What mass of nitric acid will be consumed at the same time?

3.
(iii) What would be the volume of steam at the same time of measured at 760 mm Hg pressure and 273°C?
(H = 1, N = 14; O = 16; P = 31)

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