chlorine is prepared in the lab by treating manganese dioxide (MNO2) wiht aqueous hychloric acid according to the equation
4HCl(aq) + MnO2 (s)------------- 2H20 (l) + MnCl2 (aq) + Cl2(g)
how many grams of HCl react with 5g of manganese dioxide?

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Solution

436.5g of HCl react with 87g of MnO2
144g of HCl react with 87g of MnO2
Therefore 5g of HCl will react with:
= 875 / 144
= 3.02g of MnO2

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Chlorine is prepared in the laboratory by treating manganese dioxide (MnO₂) with aqueous hydrochloric acid according to the reaction

4HCl₍_aq₎ + MnO₂₍_s₎ → 2H₂O₍_l₎ + MnCl₂₍_aq₎ + Cl₂₍_g₎

How many grams of HCl react with 5.0 g of manganese dioxide?

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M n O_{2} + 4 H C l \to M n C l_{2} + C l_{2} + 2 H_{2} O

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