Cho sơ đồ phản ứng
(1) X –to-> X1 + X2
(2) X1 + A —> X3
(3) X3 + Y —-> X + Y1 + A
(4) X3 + 2Y —> X + Y2 + 2A
(5) B + Y2 —> Y3 + X2
(6) X2 + Y1 —> Y + Y2 + A
(7) X2 + X3 –> X + X4 + A
(8) X4—to–> X +X2 + A
Hãy tìm các chất X, X1, X2,….Viết các PTHH.Biết X là 1 muối cacbonat, axit tương ứng B mạnh hơn axit tương ứng của X2
\begin{array}{l} (1)CaC{O_3} \to CaO + C{O_2}\\ X:CaC{O_3}\\ {X_1}:CaO\\ {X_2}:C{O_2}\\ (2)CaO + {H_2}O \to Ca{(OH)_2}\\ A:{H_2}O\\ {X_3}:Ca{(OH)_2}\\ (3)\,Ca{(OH)_2} + NaHC{O_3} \to CaC{O_3} + NaOH + {H_2}O\\ Y:NaHC{O_3}\\ {Y_1}:NaOH\\ (4)Ca{(OH)_2} + 2NaHC{O_3} \to N{a_2}C{O_3} + CaC{O_3} + 2{H_2}O\\ {Y_2}:N{a_2}C{O_3}\\ (5)\,2HCl + N{a_2}C{O_3} \to NaCl + C{O_2} + {H_2}O\\ B:HCl\\ {Y_3}:NaCl\\ (6)\,2C{O_2} + 3NaOH \to NaHC{O_3} + N{a_2}C{O_3} + {H_2}O\\ (7)2Ca{(OH)_2} + 3C{O_2} \to CaC{O_3} + Ca{(HC{O_3})_2} + {H_2}O\\ {X_4}:Ca{(HC{O_3})_2}\\ (8)\,Ca{(HC{O_3})_2} \to CaC{O_3} + C{O_2} + {H_2}O \end{array}
Em tham khảo nha:
\(\begin{array}{l}
(1)CaC{O_3} \to CaO + C{O_2}\\
X:CaC{O_3}\\
{X_1}:CaO\\
{X_2}:C{O_2}\\
(2)CaO + {H_2}O \to Ca{(OH)_2}\\
A:{H_2}O\\
{X_3}:Ca{(OH)_2}\\
(3)\,Ca{(OH)_2} + NaHC{O_3} \to CaC{O_3} + NaOH + {H_2}O\\
Y:NaHC{O_3}\\
{Y_1}:NaOH\\
(4)Ca{(OH)_2} + 2NaHC{O_3} \to N{a_2}C{O_3} + CaC{O_3} + 2{H_2}O\\
{Y_2}:N{a_2}C{O_3}\\
(5)\,2HCl + N{a_2}C{O_3} \to NaCl + C{O_2} + {H_2}O\\
B:HCl\\
{Y_3}:NaCl\\
(6)\,2C{O_2} + 3NaOH \to NaHC{O_3} + N{a_2}C{O_3} + {H_2}O\\
(7)2Ca{(OH)_2} + 3C{O_2} \to CaC{O_3} + Ca{(HC{O_3})_2} + {H_2}O\\
{X_4}:Ca{(HC{O_3})_2}\\
(8)\,Ca{(HC{O_3})_2} \to CaC{O_3} + C{O_2} + {H_2}O
\end{array}\)