In Activity 5.4, blowing exhaled air through freshly prepared lime water causes it to turn milky faster than air passed with a syringe, mainly because exhaled air contains:
Question
In Activity 5.4, blowing exhaled air through freshly prepared lime water causes it to turn milky faster than air passed with a syringe, mainly because exhaled air contains:
More oxygen
More carbon dioxide
More nitrogen
More water vapour only
Answer
More carbon dioxide
Detailed Explanation
Exhaled breath contains a higher amount of carbon dioxide, which reacts with lime water to turn it milky more quickly.