thermochemistry-answers

# thermochemistry-answers - Specific heat capacity(a.k.a...

This preview shows pages 1–5. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Specific heat capacity (a.k.a. Specific heat) symbolized as c, units in J/g ° C It’s the heat required to raise 1 gram of a substance by 1 ° C Heat capacity calculated by c x m, units in J/ ° C It’s the heat required to raise the temperature of an object by 1 ° C. Molar heat capacity Similar to specific heat capacity, but uses moles instead of grams, units in J/mol ° C. It’s the heat required to raise the temperature of 1 mol of a substance by 1 ° C
Answers 2. a) As calculated yesterday: 25.5 kJ b) Specific heat is 4.18 J/g ° C (pg. 151) c) Heat capacity: cm=4.18J/g ° Cx200g= 836 J/ ° C d) Molar heat capacity is c x g/mol =4.18 J/g ° C x 18 g/mol = 75.3 J/mol ° C 3. Simply using q=cm T, c= 4.18 J/g ° C, m=335 g, T=26.4-24.5= 1.9 ° C q=cm T= 4.18 J/g ° C x 335 g x 1.9 ° C = 2.7 kJ 4. We cannot determine the c for wax from this data because we did not heat the candle (no value for T). We would have to change the lab procedure if we wanted c for wax.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
1. q=cm
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 8

thermochemistry-answers - Specific heat capacity(a.k.a...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online