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Chlorine is prepared in the laboratory b...

Chlorine is prepared in the laboratory by treating manganese dioxide (`MnO_2`) with aqueous hydrochloric acid according to the reaction:
`4HCl(aq) + MnO_(2)(s) to 2H_(2)O(l) + MnCl_(2)(aq) + Cl_(2)(g)`.
How many grams of HCI react with 5.0g of manganese dioxide?

Text Solution

Verified by Experts

`Mw` of `MnO_(2)=55+32=87 g`
`1` mol `(i.e., 87 g)` of `MnO_(2)` reacts with `4 mol` of `HCl`
`(i.e., 4xx36.5 g)=146 g` of `HCl`
`5.0 g` of `MnO_(2)` will react with `HCl=146/87xx5.0=8.40 g`
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