Em tham khảo nha:
\(\begin{array}{l}
1)\\
a)\\
CaO + C{O_2} \to CaC{O_3}\\
CaO + {H_2}O \to Ca{(OH)_2}\\
CaO + 2HCl \to CaC{l_2} + {H_2}O\\
b)\\
NaOH + HCl \to NaCl + {H_2}O\\
AgN{O_3} + HCl \to AgCl + HN{O_3}\\
CuO + 2HCl \to CuC{l_2} + {H_2}O\\
c)\\
2NaOH + {H_2}S{O_4} \to N{a_2}S{O_4} + 2{H_2}O\\
2NaOH + CuC{l_2} \to Cu{(OH)_2} + 2NaCl\\
2NaOH + C{O_2} \to N{a_2}C{O_3} + {H_2}P\\
d)\\
CuS{O_4} + 2KOH \to {K_2}S{O_4} + Cu{(OH)_2}\\
BaC{l_2} + CuS{O_4} \to CuC{l_2} + BaS{O_4}\\
2)\\
{m_{NaCl}} = 0,05kg = 50g\\
{m_{{\rm{ddNaCl}}}} = {m_{NaCl}} + {m_{{H_2}O}} = 50 + 100 = 150g\\
{C_\% }(NaCl) = \dfrac{{{m_{NaCl}}}}{{{m_{{\rm{dd}}NaCl}}}} \times 100\% = \dfrac{{50}}{{150}} \times 100\% = 33,33\% \,\\
3)\\
{m_{NaOH}} = \dfrac{{{m_{{\rm{dd}}NaOH}} \times {C_\% }}}{{100}} = \dfrac{{200 \times 15}}{{100}} = 30g
\end{array}\)
