
A balanced equation of methane is given below:
Which of the following statements is not correct on the basis of the above chemical equation?
A. One mole of reacts with moles of oxygen to give one mole of and moles of water.
B. One molecule of reacts with molecules of oxygen to give one molecule of and molecules of water.
C. methane reacts with of oxygen to give of and of water.
D. of methane reacts with of to give of and of water.
Answer
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Hint : As it is mentioned in the problem that the given equation is balanced so we can easily calculate the number of moles of reactant and products. The given reaction is
Complete answer:
> In this reaction we can see that one mole of methane reacts with two moles of oxygen, one mole of carbon dioxide and two moles of water so option A is correct and also option B is correct. Since we know that mole of methane is equal to atomic weight of carbon 4X atomic weight of hydrogen g so we can also calculate mass of oxygen and carbon dioxide. Hence two moles of oxygen molecular weight of oxygen g.
One mole of carbon dioxide atomic weight of carbon + molecular weight of oxygen g .
Two moles of water Atomic weight of hydrogen +atomic weight of oxygen) g.
> With the above calculation we can say that the given statement of methane reacts with of to give of and of water is also correct.
> Let's check the last statement which is methane reacts with of oxygen to give of and of water. We know that the volume of one mole gas at STP is .So the amount of oxygen required or used for combustion of one mole methane and it will give of carbon dioxide and of water as they have one mole and two mole respectively contribution in the reaction. Hence this statement is wrong.Therefore option D is the correct answer.
Note : We have solved this problem by calculating weights of the reactant and products on the basis of the given reaction. So the answer of this problem is option is C as only this option is not correct on the basis of the given reaction.
Complete answer:
> In this reaction we can see that one mole of methane reacts with two moles of oxygen, one mole of carbon dioxide and two moles of water so option A is correct and also option B is correct. Since we know that
One mole of carbon dioxide
Two moles of water
> With the above calculation we can say that the given statement
> Let's check the last statement which is
Note : We have solved this problem by calculating weights of the reactant and products on the basis of the given reaction. So the answer of this problem is option is C as only this option is not correct on the basis of the given reaction.
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