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Harrizon [31]
3 years ago
6

As the number of carbons increases in an homologous series the melting and boiling point generally_________ *

Chemistry
2 answers:
Oliga [24]3 years ago
5 0
ANSWER: Increase


why? Because the number of C atoms in homologous series increases gradually.
MakcuM [25]3 years ago
3 0

Answer:

increase

Explanation:

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Acetic acid (HC2H3O2, Ka=1.8x10^-5) is a weak acid. Calculate the pH of an aqueous solution of .25M acetic acid.
tensa zangetsu [6.8K]

Answer: The pH of an aqueous solution of .25M acetic acid is 2.7

Explanation:

HC_2H_3O_2\rightarrow H^+C_2H_3O_2^-

 cM              0             0

c-c\alpha        c\alpha          c\alpha  

So dissociation constant will be:

K_a=\frac{(c\alpha)^{2}}{c-c\alpha}

Give c= 0.25 M and \alpha = ?

K_a=1.8\times 10^{-5}

Putting in the values we get:

1.8\times 10^{-5}=\frac{(0.25\times \alpha)^2}{(0.25-0.25\times \alpha)}

(\alpha)=0.0084

[H^+]=c\times \alpha

[H^+]=0.25\times 0.0084=0.0021

Also pH=-log[H^+]

pH=-log[0.0021]=2.7

Thus pH is 2.7

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Goryan [66]

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Answer:

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What's the definition if blood
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hope this helps!
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Why did you get that wrong?
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