Допишите уравнения реакций: CuO + HBr = H2SO4 + Ca(OH)2= Al + HCl = Na2CO3 + HNO3 =

Решите задачу:

$1) \hspace{1mm} CuO + 2HBr \longrightarrow CuBr_{2} + H_{2}O$

$2) \hspace{1mm} H_{2}SO_{4} + Ca(OH)_{2} \longrightarrow CaSO_{4} + 2H_{2}O$

$3) \hspace{1mm} 2Al + 6HCl \longrightarrow 2AlCl_{3} + 3H_{2} \uparrow$

$4) \hspace{1mm} Na_{2}CO_{3} + 2HNO_{3} \longrightarrow 2NaNO_{3} + H_{2}O + CO_{2} \uparrow$