In which of the following equations we can say that mass is conserved?

6C₂H₆ + O₂à 4CO₂ + 6H₂O

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2C₂H₆ + O₂à 8O₂ + 7H₂O

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2C₂H₆ + 7O₂à 4CO₂ + 6H₂O

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6C₂H₆ + O₂à 7CO₂ + 6H₂O

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Solution

The correct option is C
2C₂H₆ + 7O₂à 4CO₂ + 6H₂O

For the mass to be conserved the reaction should be balanced. The number of atoms of a particular element should be same on reactant side as well as product side. Therefore, $2 C_{2} H_{6} + 7 O_{2} \to 4 C O_{2} + 6 H_{2} O$ is the balanced equation

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Similar questions

What volume of oxygen would be required for complete combustion of 100 litres of ethane according to the following equation?
2C₂H₆ + 7O₂ $\overset{}{\to}$ 4CO₂ + 6H₂O

Q. What volume of oxygen would be required for the complete combustion of 100 litres of ethane according to the following equation?

2 C_{2} H_{6} + 7 O_{2} \to 4 C O_{2} + 6 H_{2} O

Q. Calorific value of ethane, in kJ/g if for the reaction :

2 C_{2} H_{6} + 7 O_{2} \to 4 C O_{2} + 6 H_{2} O; Δ H = - 745.6 k c a l

Q. Calorific value of ethane, in KJ/g for the reaction

2 C_{2} H_{6} + 7 O_{7} ⟶ 4 {C O}_{2} + 6 H_{2} O

;

Δ H = - 745.6 K c a l

Q. Calorific value of ethane, in kJ/g if for the reaction is:

2 C_{2} H_{6} + 7 O_{2} \to 4 C O_{2} + 6 H_{2} O; Δ H = - 745.6

kcal.

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In which of the following equations we can say that mass is conserved?

The correct option is C 2C2H6 + 7O2à 4CO2 + 6H2OFor the mass to be conserved the reaction should be balanced. The number of atoms of a particular element should be same on reactant side as well as product side. Therefore,2C2H6+7O2→ 4CO2+6H2O is the balanced equation