МgO+2HCI=MgCl2 + H2
H2SO3+HI=S + I2 + H2O
2Na+H2SO4= Na2SO4 + H2
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МgO+2HCI=MgCl2 + H2
H2SO3+HI=S + I2 + H2O
2Na+H2SO4= Na2SO4 + H2