100 cm3 of oxygen is made to react with 50 cm 3 of hydrogen, and the whole react...
Question
100 cm3 of oxygen is made to react with 50 cm 3 of hydrogen, and the whole reaction mixture was then passed through anhydrous calcium chloride. What is the volume of gas left?Options
A)
5 cm3
B)
25 cm3
C)
50 cm3
D)
75 cm3
E)
100 cm3
Related Lesson: Derived SI Units | Essential Ideas in Chemistry
The correct answer is D.
Explanation:
2H2 + O2 → 2H2O
2V3 1V3 2V
50cm 100 —
50cm 25cm3 50cm3
Volume of gas left = (100 - 25)cm3 of O2 = 75 cm3 of O2
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2H2 + O2 → 2H2O
2V3 1V3 2V
50cm 100 —
50cm 25cm3 50cm3
Volume of gas left = (100 - 25)cm3 of O2 = 75 cm3 of O2