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CNG is an important transportation fuel. When 100 \mathrm{~g} CNG is mixed with 208 \mathrm{~g} oxygen in vehicles, it leads to the formation of \mathrm{CO}_{2} and  \mathrm{H}_{2} \mathrm{O} and produces large quantity of heat during this combustion, then the amount of carbone dioxide, produced in grams is ____. [nearest interger]

Option: 1

143


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

Combustion reaction of Methane is given as

\mathrm{CH}_{4}+2 \mathrm{O}_{2} \rightarrow \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O}

\\\text{moles of methane }=\frac{100}{16}=6.25\\ \\\text{moles of oxygen }=\frac{208}{32}=6.5

Limiting reagent is \mathrm{O_{2}}

\\\mathrm{\therefore moles\; of \; \mathrm{CO}_{2}=\frac{6.5}{2}=3.25}\\\\ \mathrm{\therefore mass\; of \; \mathrm{CO}_{2}=3.25 \times 44=143 \mathrm{~g}}

Hence, the answer is 143

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Gunjita

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