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प्रश्न
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the mass of chlorine gas formed.
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उत्तर
1 mole of Cl2 weighs = 35.5 x 2 = 71 g
So, 0.02 mole will weigh = 71 x 0.02
= 1.42 g
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