GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If one is to examine samples of carbon dioxide (CO2) gas from a vehicle in Cavite and carbon dioxide above the pine trees in Baguio, what would be the ratio of each sample?
A
The ratio of carbon to oxygen in Cavite will be 1:1 while 2:1 in Baguio.
B
The ratio of carbon to oxygen in Cavite will be 2:1 while 1:1 in Baguio.
C
Both samples of carbon dioxide will contain the same ratio of carbon to oxygen, which is 1:2.
D
Both samples of carbon dioxide will contain the same ratio of carbon to oxygen, which is 2:1.
Explanation: 

Detailed explanation-1: -If one is to examine samples of carbon dioxide (CO2) gas from a vehicle in Cavite and carbon dioxide above the pine trees in Baguio, what would be the ratio of each sample? A. The ratio of carbon to oxygen in Cavite will be 1:1 while 2:1 in Baguio.

Detailed explanation-2: -All samples of carbon dioxide contain carbon and oxygen in the mass ratio of 3:8.

Detailed explanation-3: -Carbon dioxide reacts with calcium hydroxide solution to produce a white precipitate of calcium carbonate. Limewater is a solution of calcium hydroxide. If carbon dioxide is bubbled through limewater, the limewater turns milky or cloudy white.

Detailed explanation-4: -The most effective way to test for CO2 is to bubble the gas through “ lime water”, a diluted solution of calcium hydroxide. When we bubble carbon dioxide through the solution, it forms a solid precipitate of calcium carbonate-chalk or limestone.

Detailed explanation-5: -Updated On: 27-06-2022 Ratio of the weight of oxygen which reacts with a fixed weight of carbon (12 parts) in these oxicles is 16:32 which is a simple whole number (1:2) ratio. Thus, the formatlon of CO and CO2 Illustrats the law of multiple proportions.

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