20 cm 3 of hydrogen gas are sparked with 20cm 3 of oxygen gas in an endimoeter at 373k (100 oC) and 1 atmosphere. The resulting mixture is cooled to 298 K (25 oC) and passed over calcium chloride. The volume of the residual gas is

20 cm ³ of hydrogen gas are sparked with 20cm ³ of oxygen gas in an endimoeter at 373k (100 ^oC) and 1 atmosphere. The resulting mixture is cooled to 298 K (25 ^oC) and passed over calcium chloride. The volume of the residual gas is

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A 40 cm ³
B 20 cm ³
C 30 cm ³
D 10cm ³
E 5cm ³

Correct Answer: Option D

Explanation:
2H₂ + O₂ ------2H₂O
2V 1V 2V
20cm³ 20cm³ -------
20cm³ 10cm³ 20cm³
Residual gas = 20cm³ - 10cm³ of 0₂ = 10³

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20 cm 3 of hydrogen gas are sparked with 20cm 3 of oxygen gas in an endimoeter at 373k ...

Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE

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