PbO dissolves in `HNO_3` as it forms lead nitrate which is soluble. `PbO+2HNO_3 rarr Pb(NO_3)_2 +H_2O` HCl forms insoluble `PbCl_2` and `H_2SO_4` forms insoluble `PbSO_4 .PbO` is insoluble in water also.
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6.488 g of lead combines directly with 1.002g of oxygen to form lead peroxide. Lead peroxide also can be prepared by heating lead nitrate. It was found that the percentage of oxygen present in lead peroxide prepared by the second experiment is 13.38. Use this data to illustrate the law of definite proportions.
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