CHEM 1211 Lecture Notes - Lecture 12: Chemical Equation, Standard Solution, Electrical Network
7 Nov 2017
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Chapter 8: aqueous solutions: chemistry of the hydrosphere. Substance in lesser amount is the solute: aqueous solution. Describe the quantity of solute dissolved in a specific quantity of either solvent or total solution. If we want the amount of solvent necessary to accomplish the dilution: Electrolytes and nonelectrolytes: electric circuit: connects the negative and positive poles of the power source (battery). If a light bulb goes out, the circuit is broken. nonmetallic component in a circuit: with pure water no electricity flows. Likewise, ethanol is a poor conductor of electricity. However, solid nacl does not carry electricity either. Perhaps it has to do with the fact that ions in a solid are locked in position in the crystal structure. Electricity requires charge to flow: when nacl is dissolved in water the solution becomes a conductor and the light bulb lights up, nacl dissociates into na+ and cl- when dissolved in water.
