Chapter 10.4, Problem 6RQ

Interpretation Introduction

Interpretation: The driving force that must be predominant for an endothermic reaction to occur needs to be determined.

Concept introduction: The study of energy is done in thermodynamics. The law of conservation of energy is also termed as the first law of thermodynamics.

The first law of thermodynamics is given as,

  $\Delta E=q+w$

Here, $\text{Δ}$ is the change in the function that follows:

q is the heat and,

w is the work done.

Explanation of Solution

To calculate the energy required we use the following relation,

  $\text{Q}=s\times m\times \Delta T$

Here, Q is the energy required

s is the specific heat capacity

m is the mass of the sample in grams

  $\Delta T$ isa change in temperature in Celsius degrees

For endothermic reaction, a driving force of matter should be predominant. This spread of matter needs to overcome a change in energy which takes place in opposition to it.

Conclusion

An endothermic reaction is marked by the absorption of energy. The energy value of the endothermic reaction is positive.