At 298 K, 20 ml of methane is subjected to combustion with 50 ml of oxygen. The volume of gases left after the reaction will be - Sri Chaitanya Infinity Learn Best Online Courses for NCERT Solutions, CBSE, ICSE, JEE, NEET, Olympiad and Class 6 to 12

A
10 ml
B
20 ml
C
40 ml
D
30 ml

Solution:

${CH}_{4} (g) + 2 O_{2} (g) \to {CO}_{2} (g) + 2 H_{2} O (l); 20 ml 40 ml 20 ml Volume of oxygen remained unused = 10 ml; Volume of carbon dioxide formed = 20 ml; Total volume of gases after the reaction = 30 ml$

Solution:

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