Question

закончите уравнение реакций расставьте коэффициенты
1) Al2O3 + H2SO4 =
2) Ca(OH)2 + CO2 =
3) H3PO4 + NaOH=
4) Ba(OH)2 + H2SO4 =
​

Answer 1

1) $Al_{2}O_{3} + 3H_{2}SO_{4} = Al_{2}(SO_{4})_{3} + 3H_{2}O$

2) $Ca(OH)_{2} + 2CO_{2} = Ca(HCO_{3})_{2}$

3) $H_{3}PO_{4} + 3NaOH = Na_{3}PO_{4} + 3H_{2}O$

4) $Ba(OH)_{2} + H_{2}SO_{4} = BaSO_{4} + 2H_{2}O$