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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^?

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^?
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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^?

User Mschultz
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Necesito la versión en español plz 32
User Petar Ivcec
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