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


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


3. 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.


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


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






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






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






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. PH values above 7; Prevalence of OH-






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






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






12. The sum of exponents of concentrations of reactants






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






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






15. PH = - log[H+]






16. A process in which one substance permeates another.






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






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






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






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






21. 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.






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






23. All systems tend to lose useful energy and approach a state of minimum free energy or an equilibrium state. G = H - T x S






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






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






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






27. A system's resistance to changes in pH






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






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