K cutoff

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Jada Brown 2H
Posts: 100
Joined: Sat Aug 17, 2019 12:15 am

K cutoff

Postby Jada Brown 2H » Tue Jan 14, 2020 8:53 pm

What is the cutoff value for k that makes it small enough to use the approximation for the ICE table equation as opposed to actually having to solve for x the long way?

Robin Cadd 1D
Posts: 113
Joined: Thu Jul 11, 2019 12:16 am

Re: K cutoff

Postby Robin Cadd 1D » Tue Jan 14, 2020 8:56 pm

If K is smaller than 10^-4, you can use the shortcut.

Ally Huang- 1F
Posts: 103
Joined: Thu Jul 25, 2019 12:16 am

Re: K cutoff

Postby Ally Huang- 1F » Tue Jan 14, 2020 8:59 pm

If K is less than 1 x10^-3, then the x can be considered negligible when it is being added or subtracted. For example, 0.09-x can be written as 0.09 since x is such a small number, subtracting x would pretty much have no effect.

Jamie Lee 1F
Posts: 106
Joined: Fri Aug 09, 2019 12:16 am

Re: K cutoff

Postby Jamie Lee 1F » Wed Jan 15, 2020 5:03 pm

If K is less that 10^-3, then x is negligible.

Bilal Pandit 1J
Posts: 98
Joined: Wed Sep 11, 2019 12:16 am

Re: K cutoff

Postby Bilal Pandit 1J » Wed Jan 15, 2020 5:35 pm

It can be less than 10^-3 or greater than 10^3

Alexis Webb 2B
Posts: 124
Joined: Thu Jul 11, 2019 12:15 am

Re: K cutoff

Postby Alexis Webb 2B » Wed Jan 15, 2020 6:53 pm

Use the five percent rule that was discussed in lecture to ensure that you can use the approximation though.


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