Ответ:
Na2SO4 + 2HBr = 2NaBr + H2SO4
2Na + Br2 = 2NaBr
2Br2 + 2NaCl = 2NaBr + Cl2
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Ответ:
Na2SO4 + 2HBr = 2NaBr + H2SO4
2Na + Br2 = 2NaBr
2Br2 + 2NaCl = 2NaBr + Cl2