Physical Chemistry - Thermochemistry

1

In an __________ reaction, the products are more stable than the reactants; in an __________ reaction the reactants are more stable than the products.

2

In an __________ reaction, the products are more stable than the reactants; in an __________ reaction the reactants are more stable than the products.

3

The heat capacity of a bomb calorimeter assembly is $3.90\ \frac{\textup{kJ}}{^\circ\textup{C}}$ . What is the heat of combustion of $1.1\textup{ g}$ of sucrose in a bomb calorimeter that results in the temperature rising from $22.1\ ^\circ \textup{C}$ to $27.8\ ^\circ\textup{C}$ ?

4

The heat capacity of a bomb calorimeter assembly is $2.60\ \frac{\textup{kJ}}{^\circ \textup{C}}$ . What is the heat of combustion of $1.65 \textup{ g}$ of caffeine in a bomb calorimeter that results in the temperature rising from $23.3\ ^\circ \textup{C}$ to $31.8\ ^\circ\textup{C}$ ?

5

The heat capacity of a bomb calorimeter assembly is $2.60\ \frac{\textup{kJ}}{^\circ \textup{C}}$ . What is the heat of combustion of $1.65 \textup{ g}$ of caffeine in a bomb calorimeter that results in the temperature rising from $23.3\ ^\circ \textup{C}$ to $31.8\ ^\circ\textup{C}$ ?

6

The heat capacity of a bomb calorimeter assembly is $3.90\ \frac{\textup{kJ}}{^\circ\textup{C}}$ . What is the heat of combustion of $1.1\textup{ g}$ of sucrose in a bomb calorimeter that results in the temperature rising from $22.1\ ^\circ \textup{C}$ to $27.8\ ^\circ\textup{C}$ ?

7

Which of the following are endothermic?

8

Consider the following spontaneous reaction:

$H_2_(_g_) + O_2_(_g_)\rightarrow H_2O_(_l_)$

What can you conclude about the enthalpy change in this reaction?

9

Consider the following spontaneous reaction:

$H_2_(_g_) + O_2_(_g_)\rightarrow H_2O_(_l_)$

What can you conclude about the enthalpy change in this reaction?

10

Which of the following are endothermic?

Thermochemistry

Practice Questions