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H2So4 + 2KOH>K2So4 + 2H2O
2.Metal + kwas -> sól + wodór
2K+H2So4 > K2So4 + H2
3.tlenek metalu + kwas -> sól + woda
K2O+ H2SO4 > K2So4 + H2O
2K + H2SO4= K2SO4 + H2
K2O + H2SO4 = K2SO4 + H2O