In a 0.100M solution of a weak polyprotic acid what is the equilibrium concentration of A-2? H2A+H20-H30+A-2

Ka1=7.5x10^-5
Ka2=6.2x10^-8

answer= ?x10^?

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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what are the statements

your answer is c) plasma

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