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lead pigment were used in a water color painting which turned black after prolonged exposure...

lead pigment were used in a water color painting which turned black after prolonged exposure to an air pollutants. The original color was restored by using H2O2 which converted the black substance to a simple white lead (II) salt.
1)which pollutants turned the painting black
2)write the formula of the black substance
3)what is the white salt
4)state the role of h202 in the restoration process?
In Chemistry
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Asked by Akapo on 10th June, 2022
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WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts