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ELECTROLYTE ANALOGIES

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Analogies in this section deal with the properties of solutions and electrolytes of all types, and related concepts.

Electrolytes are like Nuts and Bolts

If a bolt represents a positive ion, a nut analogous to a negative ion and assembled units represent undissociated molecules of the electrolyte, these units can be used to represent various types of electrolytes:
A strong electrolyte would be represented by an equal no. of separate nuts and bolts in a box (complete dissociation).
A weak electrolyte would be represented by assemblying most nuts and bolts into pairs, and having only a few disconnected (small per cent ionization).
A non-electrolyte would be represented by assemblying all the nuts and bolts into pairs so that none were disconnected (no ionization).
A more concentrated solution of a weak electrolyte would be represented by showing a greater number of assembled nuts and bolts, but a smaller per cent of them dissociated into separate pieces.
Source: Fortman, John J. Pictorial Analogies X: Solutions of Electrolytes Journal of Chemical Education January 1994, 71(1), 27
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Hydronium Ion Concentration is like a Seesaw

Imagine a seesaw or teeter totter with hydronium ion concentration at one end and hydroxide ion concentration located at the other end. As the seesaw operates, it will show the required inverse relationship between these factors .... as the hydronium ion concentration goes up, the hydroxide ion concentration goes down, and vice versa.
Similarly, a seesaw with pH at one end and hydronium ion concentration at the other, shows the relationship these factors have .... as hydronium ion concentration goes up, the pH goes down, and vice versa.
Source: Fortman, John S. Pictorial Analogies XI: Concentrations and Acidity of Solutions Journal of Chemical Education May 1994, 71(5), 431
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From this Analogies page you can go either to the other analogy pages:
[ Atomic Structure | Biology | Chemical Bonding | Chemical Reactions]
[Electrolytes | Equilibrium | Matter ]

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