Chemistry Reaction Heat Graph

Before the equivalence point, the reaction involving HNO₃ is considered ______.

As more HNO₃ is added before the equivalence point, the temperature ______.

After the equivalence point, the addition of HNO₃ results in a ______ of temperature.

The cooling effect decreases as the temperature difference between HNO₃ and the reaction ______ decreases.

A constant amount of heat energy released with each additional volume of HNO₃ causes a smaller ______ increase.

Fill a ______ burette with HNO₃.

Use a 25.0 cm³ ______ to transfer the Ba(OH)₂ solution.

Record the ______ temperature of the mixture after adding HNO₃.

Place the lid with a hole for the ______ on the Styrofoam cup.

The equivalence point is indicated when the maximum temperature stops ______.

The objective of the experiment is to determine the volume of HNO₃ required for ______.

The volume of Ba(OH)₂ used in the experiment is ______.

Each addition of HNO₃ is ______ cm³.

To analyze the data, a graph is plotted with the maximum temperature on the y-axis and the total volume of HNO₃ on the ______.

It is important to ensure the bulb of the thermometer is immersed at least ______ cm³ in the solution.

Graph Shape

The graph shows the temperature change of the reaction mixture as HNO₃ is added.
Before the equivalence point, the temperature increases.
The increase in temperature is due to the exothermic reaction between HNO₃ and Ba(OH)₂.
Each addition of HNO₃ releases a constant amount of heat energy.
The temperature increase becomes smaller as more HNO₃ is added because the total volume of the mixture increases.
After the equivalence point, the temperature decreases.
This decrease is because the reaction is complete and no more heat is produced.
The HNO₃ added is at a lower temperature than the reaction mixture.

Experiment Outline

The experiment determines the volume of HNO₃ required for neutralization.
The materials needed include a thermometer, Ba(OH)₂ solution, and HNO₃ solution.
The experiment involves plotting a graph of maximum temperature versus total HNO₃ volume.
Two trend lines are drawn, one for increasing temperature and one for decreasing temperature.
The point where the two lines intersect indicates the volume of HNO₃ required for neutralization.
The maximum temperature reached is also recorded.

Procedure for Determining The Equivalence Point

The experiment involves using a burette to add HNO₃ to a solution of Ba(OH)₂.
The temperature of the mixture is monitored using a thermometer placed in a lid with a hole.
The procedure involves adding 5.00 cm³ of HNO₃ at a time and recording the maximum temperature reached after each addition.
The equivalence point is reached when the maximum temperature stops rising, indicating that all of the Ba(OH)₂ has reacted with the HNO₃.

This quiz explores the temperature change of a reaction mixture as HNO₃ is added to Ba(OH)₂. It covers the concepts of exothermic reactions, how the addition of reactants affects temperature, and the experiment to determine neutralization volume. Test your understanding of these chemical principles and graph interpretations.