chemistry

[BrownieDDD]

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the following I know I got wrong but there were no correct answer given. If anyone could figure this out and help me out, thanks!

1. why do alcohols react with acids?
a. alcohols have protons
b. acids are water soluble
c. alcohols are water soluble
d. alcohols are organic molecules
e. alcohols behave like bronsted lowry bases

i put a. but this is wrong

2. which glassware not designed to measure sol'n volumes accurately?
a. buret
b. volumetric flask
c. graduated cylinder
d. beaker
e. volumetric pipet

I put Buret but this is wrong

Although entropy continually increases within the universe as whole developing orgonamisms gradually ecome more organized. What are these orgoanmisms capale of doing to aid this process?
a. concentrate their own molecules so energy flow is reversed
b. creating entropy
c. using external sources of energy
d. violating 2nd law of t.d.
e. lower activation enzymes

i put a but apparently this is wrong.

carboxylic acid and amine are dissolved in organic solvent. Which can be best seperated by what operation?
a. extract amine into aq NaOH
b. extract amine into water
c. extract carboxylic acid into aq NaOH
d. extract carboxylic acid into water
e. extract carboxylic acid into HCl

What is used to seperate non-volatile substances?
thin layer chromatography
gas liquid chromatography
sublimation
distillation
steam distillation

 

[MrSummerlin]

the following I know I got wrong but there were no correct answer given. If anyone could figure this out and help me out, thanks!

1. why do alcohols react with acids?
a. alcohols have protons
b. acids are water soluble
c. alcohols are water soluble
d. alcohols are organic molecules
e. alcohols behave like bronsted lowry bases

Brønsted acids and Brønsted bases are defined, by which an acid is a molecule or ion that is able to lose, or "donate," a hydrogen cation (proton, H+), and a base is a species with the ability to gain, or "accept," a hydrogen cation (proton).

Answer is E




i put a. but this is wrong

2. which glassware not designed to measure sol'n volumes accurately?
a. buret
b. volumetric flask
c. graduated cylinder
d. beaker
e. volumetric pipet

D-Beaker is not really accurate


I put Buret but this is wrong

Although entropy continually increases within the universe as whole developing orgonamisms gradually ecome more organized. What are these orgoanmisms capale of doing to aid this process?
a. concentrate their own molecules so energy flow is reversed
b. creating entropy
c. using external sources of energy
d. violating 2nd law of t.d.
e. lower activation enzymes

I have seen this asked on here many times but i cant remember the answer, but i wanna say C

i put a but apparently this is wrong.

carboxylic acid and amine are dissolved in organic solvent. Which can be best seperated by what operation?
a. extract amine into aq NaOH
b. extract amine into water
c. extract carboxylic acid into aq NaOH
d. extract carboxylic acid into water
e. extract carboxylic acid into HCl

C- I think because it would deprotonate the carboxylic acid which would make it the organic layer of the solution when thy separate. Plus out of the choices it the only good acid-base rxn as well.


What is used to seperate non-volatile substances?
thin layer chromatography
gas liquid chromatography
sublimation
distillation
steam distillation

A-probably thin layer chromatography