10 Matching Annotations
1. Apr 2018
2. www.ualr.edu www.ualr.edu
1. Question 3

I thought I set this up correctly but I subbed R for .008314 instead of 0.08206....can you suggest a way I can keep these values separated and when to use one over the other??

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3. www.ualr.edu www.ualr.edu
1. What is Kc

What is Kc; i understand Ka = K of acid, Kb = k of base, Kp = K of pressure....what is C...?

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4. www.ualr.edu www.ualr.edu
1. (C)  0.1120M

This value should be 1.120M It is correct in the hint, not in the multiple choice option.

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5. chem.libretexts.org chem.libretexts.org
1. Note: Polyprotic acids and bases react stepwise forming intermediates:

While reading the text, pg. 587, I was curious about amphiprotic acids and bases. Are all polyprotic acid and base intermediates amphiprotic? or do I have this concept confused?

2. Conjugate Acid-Base Pairs

With this being the way my "Chemistry for Dummies" book explains acid base pairs that would mean that the conjugate base to the acid HF would be F-1. Is that how it works or would F-1 have to be in a compound to be counted as a conjugate base?

3. (any anion with a [-2] charge can accept two protons to become neutral

Is this simply a statement you are telling us or is this something we need to familiarize ourself with? I do not completely understand the idea. Is there anyway you could explain it further or do I need to try to come up with a different question that would allow you to understand why I am lost?

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6. chem.libretexts.org chem.libretexts.org
1. Ka <100[HA]i

every other mention shows it the other way around- [HA]i>100Ka. I'm confused on what the switch means

2. 1.2 g sodium hydride in two liters results in a 0.025M NaOH that would have a pOH of 1.6. From that the final pH is calculated using pH + pOH = 14.

says .025M but calculations show .25M

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7. chem.libretexts.org chem.libretexts.org
1. If the acid that makes the salt is stronger then it is acetic

I am confused. Did you mean acidic or is acetic another way of classifying

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8. Mar 2018
9. chem.libretexts.org chem.libretexts.org
1. acid HF,

I remember discussing during lecture, but why is HF considered a weak acid? Despite the fact, that it has very high electronegative difference. Shouldn't the big electronegative difference cause it to be a stronger acid?