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2. Chemical Engineering
3. the heat capacity cp of solid caffeine is 199 ...

# Question: the heat capacity cp of solid caffeine is 199 ...

###### Question details

The heat capacity (CP) of solid caffeine is 199 𝐽 𝑚𝑜𝑙∙𝐾 .

a. Assuming this value is constant, how much heat in J is required to heat 50 grams of caffeine from 25 to 75 °C?

b. Assuming the heat capacity at 0 K is zero, what is the linear heat capacity polynomial (Cp=A*T) for caffeine? You can easily use Excel to calculate a linear equation.

c. Using your heat capacity polynomial from (b), how much heat in J is required to heat 50 grams of caffeine from 25 to 75 °C?

d. What is the percent error in assuming constant heat capacity?