## K cutoff

Posts: 100
Joined: Sat Aug 17, 2019 12:15 am

### K cutoff

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?

Posts: 113
Joined: Thu Jul 11, 2019 12:16 am

### Re: K cutoff

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

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

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

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

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