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AP Chemistry 2.2 Forming and Breaking Bonds 11 Views


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Description:

AP Chemistry 2.2 Forming and Breaking Bonds. Find the pOH.

Language:
English Language

Transcript

00:03

Here’s your Shmoop du jour, brought to you by base.

00:07

It's what Meghan Trainor is all about… [Meghan Trainor on stage singing]

00:09

Okay, here’s our question:

00:11

A saturated solution of calcium hydroxide has a pH of 12.4.

00:15

What is the pOH?

00:17

And here are the potential answers: pH 12.4, eh?

00:21

This problem ought to be pretty…basic. [Ph 12.4 shown on Ph scale]

00:22

Heh.

00:23

Okay, in all seriousness, we know this subject can be tough, but as far as chemistry problems [Boy with chemistry formulas on a chalkboard]

00:27

go, this one’s not too bad.

00:29

The key equation we need to remember for solving this problem is pH plus pOH equals 14.

00:34

This equation is always valid for any aqueous solution, so whenever we know the pH, we can [Hand points to pH and pOH hiding behind bushes]

00:39

easily find the pOH.

00:41

In this case, the pH is 12.4, so our equation becomes 12.4 + pOH = 14.

00:47

A little simple math, and boom.

00:49

Our pOH has to equal 1.6, which is answer choice B.

00:54

That problem was so basic, we’re surprised it wasn’t wearing UGG boots and drinking [Man wearing ugg boots and takes sip of pumpkin latte]

00:58

a pumpkin spice latte…

00:59

…What?

01:00

They're comfy.

01:01

And this tastes like fall in a cup.

01:03

Don't judge.

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