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HACTEHA [7]
3 years ago
11

Why is Fluorine, chlorine, bromine, and iodine grouped together?

Chemistry
1 answer:
8_murik_8 [283]3 years ago
8 0
<span>Fluorine, chlorine, bromine, and iodine grouped together because they have the same chemical and physical properties. They are also called halogens and under Group 7</span>
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Farmers who raise cotton once used arsenic acid, H₃AsO₄, as a defoliant at harvest time. Arsenic acid is a polyprotic acid with
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Explanation:

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

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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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Thus, we can conclude that the pH of a 0.500 M solution of arsenic acid is 1.958.

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