2 years ago

Which valid empercal formula below would have one. Five times as much oxygen as there is gold in the substance

Chemistry

1 answer:

stealth61 [152]2 years ago

3 0

Answer:

Au2O3

Explanation:

See attachment.

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3 years ago

A solution is prepared at that is initially in benzoic acid , a weak acid with , and in sodium benzoate . Calculate the pH of th

Kisachek [45]

Answer:

$pH=4.1$

Explanation:

Hello,

In this case, for a concentration of 0.42 M of benzoic acid whose Ka is 6.3x10⁻⁵ in 0.33 M sodium benzoate, we use the Henderson-Hasselbach equation to compute the required pH:

$pH=pKa+log(\frac{[base]}{[acid]} )$

Whereas the concentration of the base is 0.33 M and the concentration of the acid is 0.42 M, thereby, we obtain:

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Regards.

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3 years ago