2КОН + SO2 = K2SO3 + H2O
)))
MgO+H2SO4=MgSO4+H2O реакция обмена
<span><span>2Al</span> + <span>6H2O</span> = <span>2Al</span><span>(OH)</span>3 + <span>3H2↑</span></span> <span><span>ОВР : </span></span> <span><span><span>Восстановление:<span>2H2O+ + 4<span>e−</span> = H2 + 2OH−</span>Окисление:<span>Al + 3OH− − 3<span>e−</span> = Al<span>(OH)</span>3</span></span><span>34</span></span><span>6H2O+ + 4Al + 6OH− = 3H2 + 4Al<span>(OH)</span><span>3</span></span></span>
Sr-двухвалентный
Si-четырехвалентный
О-двухвалентный