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Electrical Engineering Chemistry

Subject : engineering
Instructions:
  • Answer 29 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. All systems tend to lose useful energy and approach a state of minimum free energy or an equilibrium state. G = H - T x S






2. The gain of electrons or a decrease in oxidation state by a molecule - atom - or ion






3. The accumulation of gases - liquids - or solutes on the surface of a solid or liquid.






4. The loss of electrons or an increase in oxidation state by a molecule - atom - or ion






5. 'K'; the ratio of concentrations when equilibrium is reached in a reversible reaction






6. The sum of exponents of concentrations of reactants






7. PH values above 7; Prevalence of OH-






8. The effective or apparent concentration - or that portion of the true mole- based concentration of a species that participates in a chemical reaction - normalized to the standard state concentration.






9. A system in which the molar free energy of a solute in water depends on the mole fraction






10. The mathematical equation k=Ae^-Ea/RT - which expresses the dependence of the rate constant on temperature






11. The state of an element in a compound with respect to the number of electrons it has lost or gained - expressed as a positive or negative number indicating the ionic charge of an atom and equal to its valence.






12. Oxidation -Reduction Reaction; A kind of reaction in which electrons are transferred - thereby oxidizing some atoms - and reducing others






13. A special case of Raoult's Law applied to dilute systems

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14. K_H; Used to describe a chemical's equilibrium between air and water phases.

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15. A process in which one substance permeates another.






16. The vapor pressure of an ideal solution is dependent on the vapor pressure of each chemical component and the mole fraction of the component present in the solution.

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17. Useful when a mixture of chemicals is spilled. K = P/X

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18. Evaporation; The transformation of a compound from its liquid state to its gaseous state






19. The maximum quantity of a substance that can dissolve in a unit volume of solvent under specified conditions






20. The transformation of a compound from its solid to gaseous state






21. The minimum quantity of energy that the reacting species must possess in order to undergo a specified reaction






22. The ionized - or ionizable - constituents of organic matter






23. A thermodynamic quantity equal to the enthalpy (of a system or process) minus the product of the entropy and the absolute temperature






24. PH = - log[H+]






25. Energy is conserved; dU=dQ- dW+dG






26. A species that can release or donate a hydrogen ion (proton)






27. 'I' or 'nu;' Has units of moles/liter and is a measure of the long- range electrostatic interactions in that solution.






28. A species that can accept or combine with a proton






29. A system's resistance to changes in pH