Question

Toluene, C7H8, is used in the manufacture of explosives such as TNT (trinitrotoluene). A 1.500 g sample of liquid toluene was placed in a bomb calorimeter along with excess oxygen. When the combustion of the toluene was initiated, the temperature of the calorimeter rose from 25.000 °C to 26.413 °C. The products of the combustion were CO2(g) and H2O(l), and the heat capacity of the calorimeter was 45.06 kJ °C−1 . Write the balanced chemical equation for the reation in the calorimeter.

Answer 1

The answer to your question is C₇H₈ + 9O₂ ⇒ 7CO₂ + 4H₂O

Step-by-step explanation:

Data

Toluene C₇H₈

mass = 1500 g

Excess Oxygen

Temperature 1 = 25°C

Temperature 2 = 26.413°C

Products CO₂ and H₂O

Heat capacity = 45.06 kJ/°C

Balanced chemical equation

Toluene + Oxygen ⇒ Carbon dioxide + Water

C₇H₈ + O₂ ⇒ CO₂ + H₂O

Reactants Elements Products

7 Carbon 1

8 Hydrogen 2

2 Oxygen 3

This reaction is unbalanced

C₇H₈ + 9O₂ ⇒ 7CO₂ + 4H₂O

Reactants Elements Products

7 Carbon 7

8 Hydrogen 8

18 Oxygen 18

Now, the reaction is balanced