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Calculate the concentrations of H2SO3, HSO−3, SO2−3, H3O+ and OH− in 0.020 M H2SO3. [H2SO3], [HSO-3],[SO2-3],[H3O+],[OH-]...

Calculate the concentrations of H2SO3, HSO−3, SO2−3, H3O+ and OH− in 0.020 M H2SO3. [H2SO3], [HSO-3],[SO2-3],[H3O+],[OH-] = ? Express your answer using two significant figures.

Solutions

Expert Solution

H2SO3 :

Ka1 = 1.4×10–2
Ka2 = 6.3×10–8

H2SO3    ------------------> H+   + HSO3-

0.020                                  0            0

0.020 - x                             x             x

Ka1 = x^2 / 0.02 - x

1.4 x 10^-2 = x^2 / 0.02 - x

x = 0.011

[H3O+] = 0.011 M

[HSO3-] = 0.011 M

[OH-] = 9.1 x 10^-13 M

[SO32-] = 6.3 x 10^-8 M

[H2SO3] = 0.0090 M

queen_honey_blossom answered 2 years ago
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