Chemistry: Determine the ph of a 0.500 m hno2 solution. ka of hno2 is 4.6 * 10-4. a. 1.82 b. 1.67 c. 2.67 d. 0.30

Determine the ph of a 0.500 m hno2 solution. ka of - id050023462053, salvadorjr1226p4zkp3

Ответ:

SoccerHalo

08.01.2022

Chemistry

pH of solution is = 1.82

Explanation:

$HNO_2\rightarrow H^+NO_2^-$

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= 0.500 M and $\alpha$ = ?

$K_a=4.6\times 10^{-4}$

Putting in the values we get:

$4.6\times 10^{-4}=\frac{(0.500\times \alpha)^2}{(0.500-0.500\times \alpha)}$

$(\alpha)=0.030$

$[H^+]=c\times \alpha$

$[H^+]=0.500\times 0.030=0.015$

Also pH=-log[H^+]

pH=-log[0.015]=1.82

Thus pH of a 0.500 M HNO_2 solution is 1.82

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Ответ:

Harini5721

09.07.2022

Chemistry

because it is organized to provide a great deal of information about elements and how they relate to one another in one easy-to-use reference. ... Columns (groups) and rows (periods) indicate elements that share similar characteristics.

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Determine the ph of a 0.500 m hno2 solution. ka of hno2 is 4.6 * 10-4.

a. 1.82
b. 1.67
c. 2.67
d. 0.30

Ответ:

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