ICSE 1998 : SCIENCE Paper 2 (Chemistry) - Question 1(d) Answer the following.

SCIENCE
Paper 2 (Chemistry) - 1998
(One hour and a half)

Question 1
(d) Water can be split into hydrogen and oxygen under suitable conditions. The equation representing the change is:

2H₂O (l) → 2H₂ (g) + O₂ (g)

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16.
(i) If a given experiment result in 2500 cm³ of hydrogen being produced, what volume of oxygen is liberated at the same time under the same conditions of temperature and pressure?

17.
(ii) The 2500 cm³ of hydrogen is subjected to a 2½ times increase in pressure (temperature remaining constant). What volume will the hydrogen now occupy?

18.
(iii) Taking the volume of hydrogen calculated in (d) (ii), what change must be made in the Kelvin (absolute) temperature to return the volume to 2500 cm³ (pressure remaining constant)?

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