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2 years ago

If the electron affinity for an element is negative, this means that

Chemistry

1 answer:

AlladinOne [14]2 years ago

8 0

Answer: If the electron affinity is negative, it indicates the release of energy from the atom. Hope this helps :)

Explanation:

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3 years ago

The next 11 questions are related to the titration of 40.00 mL of a 0.0900 M acetic acid solution with 0.0700 M KOH. Assume that

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Answer:

2.9 is the initial pH of the analyte solution.

Explanation:

The dissociation constant of acetic acid as per theoretical value = $K_a$

$K_a=10^{-4.756}=1.8\times 10^{-5}$

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$HAc\rightleftharpoons Ac^-+H^+$

initially

c 0 0

At equilibrium

(c-x) x x

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$K_a=\frac{[Ac^-][H^+]}{[HAc]}$

$1.8\times 10^{-5}=\frac{x\times x}{(c-x)}$

$1.8\times 10^{-5}=\frac{x\times x}{(0.0900-x)}$

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