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Postby 605110118 » Thu Jan 16, 2020 9:53 am

Do we have to memorize this equation or will it be given on tests?

Wendy 1E
Posts: 111
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Re: Quadratic

Postby Wendy 1E » Thu Jan 16, 2020 10:25 am

It will be given on tests. If you look at the "constants and equations" section on his website, you will see that the quadratic equation is given.

Madelyn Romberg 1H
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Re: Quadratic

Postby Madelyn Romberg 1H » Thu Jan 16, 2020 10:31 am

I would recommend becoming familiar with it in general though. It will help you timewise to know how to use the formula and not waste time on the math when you can be focusing more on the chemistry at hand.

Rita Chen 1B
Posts: 112
Joined: Sat Jul 20, 2019 12:15 am

Re: Quadratic

Postby Rita Chen 1B » Thu Jan 16, 2020 12:41 pm

Definitely try to memorize it. I think doing more practice problems really helps you with that!

Jasmine Fendi 1D
Posts: 108
Joined: Sat Aug 24, 2019 12:15 am

Re: Quadratic

Postby Jasmine Fendi 1D » Thu Jan 16, 2020 1:26 pm

Memorizing the quadratic equation would help! Also, it is good to know the shortcut with the 5% rule. if you are dealing with a weak acid and Ka is small, we can use approximation. The cut off is anything smaller than 10^-3

HannahBui 2K
Posts: 101
Joined: Wed Sep 18, 2019 12:19 am

Re: Quadratic

Postby HannahBui 2K » Thu Jan 16, 2020 2:48 pm

The quadratic formula is given on the equation sheet listed on the class website, which is the same equation sheet we will be given on tests

Posts: 60
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Re: Quadratic

Postby Uisa_Manumaleuna_3E » Thu Jan 16, 2020 3:04 pm

Do yourself a favor and just practice the quadratic formula as much as you can. it just helps make it that much easier, solving everything

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