Negligible X
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Negligible X
I know that K values less than 10^-3 allow for x to be considered a negligible change in initial concentrations. But for values of K over 10^3 that means it is a strong forward reaction, so I was wondering if there are any rules applying to these situations that are helpful to be aware of?
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Re: Negligible X
I think the most important thing to remember for K values greater than 10^-3 is that you must include the change in x in your equilibrium concentration, as x cannot be considered negligible. When it comes to solving for x in these situations, Dr. Lavelle said in lecture that problems will not be any more complicated than having to use the quadratic formula.
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Re: Negligible X
I believe for this class, most of the time when we have to use K value to calculate, it will be for a weak acid/base(meaning smaller k vaules). So I would just remember that approximations can be use when K is less than 10^-3.
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Re: Negligible X
I think the most important thing to remember is that K is less than 10^-3, besides that I don’t think this class will require more (at least for now).
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Re: Negligible X
I believe that if K is any value less than 10^-3, X can be considered negligible because it is relatively extremely small. This simplifies the calculation. However, with any K value greater than this, we would have to calculate the value with the X included.
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