Răspuns:
a) Cu2O + H2SO4 → Cu2SO4 + H2O
b) 3HBr + Al(OH)3 → 3H2O + AlBr3
c) CuSO4 + KOH → Cu(OH)2 + K2SO4
d) 2Rb + 2HOH → 2RbOH + H2
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Răspuns:
a) Cu2O + H2SO4 → Cu2SO4 + H2O
b) 3HBr + Al(OH)3 → 3H2O + AlBr3
c) CuSO4 + KOH → Cu(OH)2 + K2SO4
d) 2Rb + 2HOH → 2RbOH + H2