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A 2g sample containing KI and NaCl yield...

A 2g sample containing KI and NaCl yielded 0.425g metallic palladium. What is the % KI in a sample, if iodide (`I^(-)`) can be separated from other halides by precipitation as `Pdl_2` and weighed after reduction in a current of `H_2` to yield Pd.

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The correct Answer is:
66.4
0.425 g Pd `= 0.425/106.4 xx 1000 = 4` m molof Pd from 4m. Mol of `PdI_(2)`
m moles of `I^(-) = 8` m mole of Kl
Mass of Kl `= 8 xx 10^(-3) xx 166 = 1.328 g`
Mass % of Kl `=1.328/2 xx 100 = 66.4 %`
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