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Lena [83]
3 years ago
13

Please help ASAP!! (I added a pic)

Chemistry
1 answer:
riadik2000 [5.3K]3 years ago
4 0
The middle is noble gases the first one is alkaline metals and then the last one is the only one left
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The ph of a solution containing 0.818 M acetic acid<br> (ka1.76*10-5) ans 0.172 M sodium acetate is?
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Explanation:

It is known that the relation between pH and pK_{a} is as follows.

              pH = pK_{a} + log \frac{[salt]}{[acid]}

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Hence, first we will calculate the value of pK_{a} as follows.

                   pK_{a} = -log K_{a}

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Now, we will calculate the value of pH as follows.

              pH = pK_{a} + log \frac{[\text{sodium acetate}]}{\text{acetic acid}}

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                    = 4.07

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