Chlorine in the laboratory is obtained by the action of concentrated hydrochloric acid on manganese (IV)

| June 1, 2021 | education

Chlorine in the laboratory is obtained by the action of concentrated hydrochloric acid on manganese (IV) oxide according to the scheme: MnO2 + HCl → MnCl2 + Cl2 + H2O Place the coefficients in this scheme using the electronic balance method. in the answer write a sequence of coefficients without spaces and commas (for example, 12421)

In the proposed equation, the elements change their oxidation states, which means that it is oxidative –
restorative reaction. The number of donated and attached electrons in such reactions is equal, which shows the electron-ion balance.
During the reaction, the elements manganese and chlorine changed their oxidation states, therefore:
Mn (+4) + 2e = Mn (+2) 1 – oxidizing element, reduction process.
2Cl (-) – 2e = Cl2 (0) 1 – reducing element, oxidation process.
MnO2 + 4 HCl = MnCl2 + Cl2 + 2 H2O
Answer: 14112



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