A sample of an arsenic salt weighing 100mg was dissolved and the arsenic converted to arsenite,...
Homework Answers
Number of moles of Permanganate solution = 10.98/1000 * 0.01234 = 0.00013549 moles
Arsenic will go from oxidation state of +3 to +5, hence number of moles of arsenic will be
0.00013549 moles * 5/2 = 0.000338733 moles
Mass of arsenic = 0.000338733 moles * 74.92 gm/mol = 0.025377 gms
Percentage of arsenic in salt = 0.025377/0.1 * 100 = 25.37%
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sample of an arsenic salt weighing 100mg was dissolved and the
arsenic converted to arsenite,...
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