Introduction to Thermochemistry (Worksheet)
- Page ID
- 74151
\( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\)
Name: ______________________________
Section: _____________________________
Student ID#:__________________________
Work in groups on these problems. You should try to answer the questions without referring to your textbook. If you get stuck, try asking another group for help.
Q1: Definition
Define the following terms:
- heat
- work
- temperature
- exothermic
- endothermic
- First Law of Thermodynamics
- system
- surroundings
- kinetic energy
- potential energy
Q2: Fill in the Blanks
- Heat gained (absorbed) is considered _____________; heat lost by system to surroundings is _________________.
- The _____________ is a metric unit of energy equal to 1 kg m2/sec2.
Q3: Heat and Stoichiometry
For heat associated for the combustion of sulfur is is 2368 kJ per mole of \(S_8\)):
\[ S_8 (s) + 8O_2(g) \rightarrow 8 SO_2 (g) \nonumber \]
- How much heat is evolved when 25 moles of sulfur is burned in excess oxygen?
- How much heat is evolved when 275 grams of sulfur is burned in excess oxygen?
- How much heat is evolved when 150.0 grams of sulfur dioxide is produced?