Na2SO4+2AgNO3=Ag2SO4+2NaNO3
Na2SO4+H2SO4=2NaHSO4
Na2SO4+Ba(OH)2=BaSO4+2NaOH
Ответ:4 пункт
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Na2SO4+2AgNO3=Ag2SO4+2NaNO3
Na2SO4+H2SO4=2NaHSO4
Na2SO4+Ba(OH)2=BaSO4+2NaOH
Ответ:4 пункт