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7 Organic chemistry

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Question 27

A student writes this equation for the complete combustion of propane.

C3H8+4O2→2CO2+4H2O\text{C}_3\text{H}_8 + 4\text{O}_2 \rightarrow 2\text{CO}_2 + 4\text{H}_2\text{O}C3​H8​+4O2​→2CO2​+4H2​O

Which equation corrects the student's equation?

[1]
A

C3H8+4O2→3CO2+4H2O\text{C}_3\text{H}_8 + 4\text{O}_2 \rightarrow 3\text{CO}_2 + 4\text{H}_2\text{O}C3​H8​+4O2​→3CO2​+4H2​O

B

C3H8+4O2→3CO2+2H2O\text{C}_3\text{H}_8 + 4\text{O}_2 \rightarrow 3\text{CO}_2 + 2\text{H}_2\text{O}C3​H8​+4O2​→3CO2​+2H2​O

C

C3H8+7O2→3CO2+8H2O\text{C}_3\text{H}_8 + 7\text{O}_2 \rightarrow 3\text{CO}_2 + 8\text{H}_2\text{O}C3​H8​+7O2​→3CO2​+8H2​O

D

C3H8+5O2→3CO2+4H2O\text{C}_3\text{H}_8 + 5\text{O}_2 \rightarrow 3\text{CO}_2 + 4\text{H}_2\text{O}C3​H8​+5O2​→3CO2​+4H2​O

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7 Organic chemistry Questions

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