Combustion usually occurs when a hydrocarbon reacts with oxygen to produce carbon dioxide and water. Combustion reactions are almost always exothermic CO(g) + ½O2(g) → CO2(g) + 67.6 kcal
base from the reaction, the stoichiometric ratio is 1 mole CO produce 67.6 kcal so the anwer is - 67.6 kcal because is it exothermic
Answer:
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Explanation:
Increase the Surface Area of the Reactants. Increasing the surface area of the reactants increases the rate of the reaction. More surface area means more collisions of the reactant molecules and an increased rate of the reaction. This occurs when reactants are made to react in powdered form
Answer:
Mass of CH = 5.46 g
Explanation:
Given data:
Mass of H = 10.0 g
Mass of C = 5.0 g
Mass of CH = ?
Solution:
Chemical equation:
C + H → CH
Number of moles of H:
Number of moles = mass/molar mass
Number of moles = 10.0g / 1 g/mol
Number of moles = 10 mol
Number of moles of C:
Number of moles = mass/molar mass
Number of moles = 5.0g / 12 g/mol
Number of moles = 0.42 mol
Now we will compare the moles of H and C with CH.
C : CH
1 : 1
0.42 : 0.42
H : CH
1 : 1
10 : 10
Number of moles of CH produced by C are less it will act as limiting reactant.
Mass of CH:
Mass = number of moles × molar mass
Mass = 0.42 mol × 13 g/mol
Mass = 5.46 g