What is the composition of the precipitate formed when H2S gas is ...

[ec501234]

What is the composition of the precipitate formed when H₂S gas is bubbled through 1.0 litre of a solution of 0.010 M Zn²⁺, 0.010 M Pb²⁺, and 0.010 M Mn²⁺, buffered at pH 2.0, until 0.10 mol of H₂S has been added? (K_sp values are: ZnS: 1.6 × 10^-23; MnS: 7.0 × 10^-16; PbS: 7.0 × 10^-29. For H₂S, K_a1 = 1.0 × 10^-7; K_a2 = 1.3 × 10^{-13 )}.
◦ only ZnS
◦ only MnS
◦ only PbS
◦ only MnS and PbS
◦ only ZnS and PbS

[lkanara2]

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[ec501234]

Wow, this really help

[parker125]

Thanks for the timely response, appreciate it