AP EAMCET · Chemistry · Some Basic Concepts of Chemistry
When \(30 \mathrm{~mL}\) of \(\mathrm{H}_2\) reacts with \(20 \mathrm{~mL}\) of \(\mathrm{O}_2\) to form water, what is leftover when the reaction ends?
- A \(10 \mathrm{mLH}_2\)
- B \(5 \mathrm{mLH}_2\)
- C \(10 \mathrm{mLO}_2\)
- D \(5 \mathrm{mLO}_2\)
Answer & Solution
Correct Answer
(D) \(5 \mathrm{mLO}_2\)
Step-by-step Solution
Detailed explanation
Given Here, \(\mathrm{H}_2\) is the limiting reagent. So, \(30 \mathrm{~mL} \mathrm{H}_2\) consumes \(15 \mathrm{~mL}\) of \(\mathrm{O}_2\) as \(\mathrm{H}_2\) and \(\mathrm{O}_2\) react in \(2: 1\) volume ratio (at constant pressure and temperature).
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