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Calculate the weight of MnO(2) and the v...

Calculate the weight of `MnO_(2)` and the volume of HCl of specific gravity 1.2 g g `mL^(-1)` and `5%` by weight needed to produce 1.12 L of `Cl_(2)` at STP by the reaction `MnO_(2)+4"HCl"toMnCl_(2)+3H_(2)O+Cl_(2)`

Text Solution

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The correct Answer is:
8
`MnO_(2)+4HClto MnCl_(2)+Cl_(2)+2H_(2)O`
`100gm` sol contains `4gm HCl`
`100/1.2 ml` sol contains `4 gm HCl`
`nCl_(2)=1.8/22.4=0.0805`
`W_(MnO_(2))=0.0805xx87=8gm`
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