Chemical Thermodynamics

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1. Which of these biochemical reactions does not require energy?

  • Passive transport of ions and molecules
  • Synthesis of biological compounds
  • Maintainence of temp
  • Motion - muscle work
  • Electrical activity of the nervous system
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2. What is the pressure volume work done ON a system equation?

  • Change in U = W + p(Change in V)
  • Change in U = Q + W
  • Change in U = Q + p(Change in V)
  • Change in U = Q - p(Change in V)

3. Change in G > 0 means ...

  • The reaction is exergonic (reaction is spontaneous and useful work is obtained)
  • The reaction is endergonic (requires energy from surrounding to proceed)
  • The reaction is exergonic (requires energy from surrounding to proceed)
  • The reaction is in equilibrium (no work obtained)

4. Which of the equations is Boltzmann constant used for?

  • For absolute value of Entropy
  • For absolute value of Enthalpy
  • For absolute value of Energy

5. In terms of the system - change in H > 0 - means...

  • That the system has gained energy (exothermic)
  • That the system has gained energy (endothermic)
  • That the system has lost energy (endothermic)
  • That the system has lost energy (exothermic)

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