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A) The gas coming out of the delivery tube is heavier than air and will make the candle glow brightly.
B) The gas coming out of the delivery tube is lighter than air and will extinguish the candle.
C) The gas coming out of the delivery tube is heavier than air and will extinguish the candle.
D) The gas coming out of the delivery tube is lighter than air and will make the candle glow brightly.
Correct Answer: C
Solution :
Carbon dioxide gas is formed when sodium bicarbonate reacts with conc. sulphuric acid to produce carbon dioxide \[2NaHC{{O}_{3}}+{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}N{{a}_{2}}S{{O}_{4}}+2{{H}_{2}}O+2C{{O}_{2}}\] Since carbon dioxide is heavier than air, it starts filling the beaker and slowly reaches the level of the flame. As the gas does not support combustion, the flame is extinguished. The correct answer is C.You need to login to perform this action.
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