What is the pH of 0.1 M FeSO4 please show all steps

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Chemistry

What is the pH of 0.1 M FeSO4 please show all steps

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FeSO4 ------> Fe⁺² +SO4^2-

Â Â Â Â SO4^2- + H2O -----> HSO4^- + OH^_

IÂ Â Â 0.1Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0Â Â Â Â Â Â Â Â Â Â Â 0

CÂ Â -xÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â +XÂ Â Â Â Â Â Â Â Â +x

EÂ Â 0.1-x Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â +xÂ Â Â Â Â Â Â Â Â +x

ka of HSO4- is 0.012

Kb = Kw/ka

Â Â Â Â = 1*10^-14/0.012

Â Â Â = 83.3*10^-14

Kb = [HSO4-][OH-]/[SO4^2-]

83.3*10^-14 = x*x/0.1-x

x²Â Â Â Â = 83.3*10^-14

x = 9.12*10^-7

[OH-] = x =9.12*10^-7 M

POH = -log9.12*10^-7

Â Â Â Â Â Â = -log9.12+7log10

Â Â Â Â = -0.9604 +7 = 6.0396

PH = 14-POH

Â Â Â Â = 14-6.0396

Â Â Â = 7.9604

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What is the pH of 0.1 M FeSO4 please show all steps

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