About destroyer Orchem nucleophile problem

[CHCH]

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105. Which is the best nucleophile?

A. H20 B. AlCl3 C. C2H5OH D. CH3SH E. CH3COOH

I watched Chad's video on orchem, and he said that the nucleophilicity is based on what kind of solvent used, ex protic or aprotic solvent?

In this case, there is not info about which solvent used..so..I was kind of confused. Answer is D.

Thanks everyone😍


I have another math destroyer question

Practice Test 3
question 15

It is found that 14% of a population has blue eyes, while 25% are left handed, and 8% are both blue-eyed and left handed. What is the probability that a person randomly chosen from the population is either blue-eyed or left handed?

I thought 14+25-8-8= 23%

Answer is 31% 14+25-8 = 31%. Isn't it you gotta subtract two times?

Thanks everyone

 

[MichaelTrann]

105. Which is the best nucleophile?

A. H20 B. AlCl3 C. C2H5OH D. CH3SH E. CH3COOH

I watched Chad's video on orchem, and he said that the nucleophilicity is based on what kind of solvent used, ex protic or aprotic solvent?

In this case, there is not info about which solvent used..so..I was kind of confused. Answer is D.

Thanks everyone😍

OK here's what I think:
When I think of a nucleophiles/bases, I think of a little naughty boy (a pair of electron/negative charge) that goes around and messes up with his neighbors (electrophilic). If you give him a really harsh, rude, strict baby sitter (strong stabilizing factor), he's basically grounded and can't go anywhere far (become weak nucleophile). Conversely, he can leave the house easily (strong nucleophile) if the baby sitter is at ease (weak stabilizing factor).

-A & B can initially eliminated.
-E: acetate ion is stabilizing by the carbonyl, so it's definitely not a strong nuc-
-between B & D: oxygen is more electronegativity and is very happy carrying the negative charge compared to sulfur

So D is the answer!

 

[CHCH]

OK here's what I think:
When I think of a nucleophiles/bases, I think of a little naughty boy (a pair of electron/negative charge) that goes around and messes up with his neighbors (electrophilic). If you give him a really harsh, rude, strict baby sitter (strong stabilizing factor), he's basically grounded and can't go anywhere far (become weak nucleophile). Conversely, he can leave the house easily (strong nucleophile) if the baby sitter is at ease (weak stabilizing factor).

-A & B can initially eliminated.
-E: acetate ion is stabilizing by the carbonyl, so it's definitely not a strong nuc-
-between B & D: oxygen is more electronegativity and is very happy carrying the negative charge compared to sulfur

So D is the answer!

Thanks😍🙂

 

[MichaelTrann]

you're very welcome, happy studying buddy 🙂

 

[MichaelTrann]

Practice Test 3
question 15

It is found that 14% of a population has blue eyes, while 25% are left handed, and 8% are both blue-eyed and left handed. What is the probability that a person randomly chosen from the population is either blue-eyed or left handed?

I thought 14+25-8-8= 23%

Answer is 31% 14+25-8 = 31%. Isn't it you gotta subtract two times?

Thanks everyone

How about this: A population is 40% yellow, 40% red and 20% orange (red + yellow). If you want to pick a color that contains no red OR no yellow then the orange has to be completely eliminated. (because yellow is either yellow or not, red is either red or not, whereas orange can be either red or yellow). So the answer will be (yellow + red) - orange. I hope it makes sense 🙂

 

[CHCH]

How about this: A population is 40% yellow, 40% red and 20% orange (red + yellow). If you want to pick a color that contains no red OR no yellow then the orange has to be completely eliminated. (because yellow is either yellow or not, red is either red or not, whereas orange can be either red or yellow). So the answer will be (yellow + red) - orange. I hope it makes sense 🙂

Sorry. I did not get that. I used van diagram to figure it out