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3 years ago

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Which of the following is an anion? A. O2– B. Mg2+ C. Al3+ D. H

2 answers:

Alekssandra [29.7K]3 years ago

6 0

An anion is an ion that has gained electrons and because of this it has an overall electrical charge that is negative due to the excess of electrons, which is greater than the atomic number or number of protons for the atom.

A. O2- is the anion.

Alika [10]3 years ago

4 0

An anion is O2- that is option A.

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Mashutka [201]

Answer:

$P_H =2.86$

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Explanation:

first write the equilibrium equaion ,

$C_3H_6O_3$ ⇄ $C_3H_5O_3^{-} +H^{+}$

assuming degree of dissociation $\alpha$ =1/10;

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$K_a = \frac{c\alpha \times c\alpha}{c-c\alpha}$

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jekas [21]

D is the correct answer... if u need in depth let me know

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Answer:

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hope this helps :)

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