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InterviewSolution
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Galena (an ore) is partially oxidized by passing air through it at high temperature. After some time, the passage of air is stopped, but the heating is continued in a closed furnance such that the contents undergo self-reduction, the weight (in kg) of Pb produced per kg of `O_(2)` consumend is _______ (Atomic weights in g `mol^(=1):O=16,S=32,Pb=207` |
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Answer» Correct Answer - D (6.47) `PbS+O_(2) to PbSO_(2)` `(1000)/(32)mol (1000)/(32) xx207 gm` mol of Pb= mol of`O_(2)` `=(10000)/(32)` mol `:.` Mass of Pb `=(1000)/(32)xx207g` `=(207)/(32)kg =6.47 `kg |
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