3 years ago

Which statements describe band theory? Check all that apply.

Chemistry

1 answer:

Papessa [141]3 years ago

8 0

Answer:

b c

Explanation:

right

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Which type of precipitation occurs when the water vapor in a cloud freezes to form ice crystals?

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A molecule has three bonded atoms around the central atom. The central atom does not have any lone pairs. What is the geometry o

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Explanation:

The reaction equation will be as follows.

$H_{3}AsO_{4} \rightleftharpoons H_{2}AsO^{-}_{4} + H^{+}$

Hence, the expression for $K_{a}$ is as follows.

$K_{a} = \frac{[H_{2}SO^{-}_{4}][H^{+}]}{[H_{3}AsO_{4}]}$

Let us assume that the concentration of both $[H_{2}AsO^{-}_{4}]$ and $[H^{+}]$ is x.

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This means that the concentration of $[H^{+}]$ is 0.01118034.

Since, we know that the relation between pH and concentration of hydrogen ions is as follows.

pH = $-log [H^{+}]$

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