Question

35. If 30 mL of H, and 20 mL of O, react to form
water, what is left at the end of the experiment?
(a) 10 mL of H, (b) 5 mL of H,
(c) 10 mL of 0) (d) 5 mL of O,
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Answer 1

Answer:

5 'll of hydrogen .........

Answer 2

Explanation:

30 mL of H₂ and 20 mL of O₂ reacts to form water. what is left at the end of the reaction?

Options

(a) 10 mL of H₂

(b) 5 mL of H₂

(c) 10 mL of O₂

(d) 5 mL of O₂

Correct Answer:

5 mL of O₂

Explanation:

2H₂ + O₂ → 2H₂O

2 mol 1 mol 2 mol

2 vol 1 vol 2 vol

30 mL 15 mL 30 mL

Therefore, oxygen is in excess and amount of oxygen left

=20- 15= 5 mL