Question

Câu 1: Hoàn thành sơ đồ phản ứng sau: a) CaO + H2O ----> b) Na + H2O ----> c) Zn + HCl ----> d) H2 + CuO ----> e) K2O + H2O ----> f) Ca + H2O ----> g) Na + H2SO4 ----> h) H2 + FeO ----> i) P2O5 + H2O ---->

Answer 1

\(a,CaO+H_2O\rightarrow Ca\left(OH\right)_2\)

\(b,2Na+2H_2O\rightarrow2NaOH+H_2\uparrow\)

\(c,Zn+2HCl\rightarrow ZnCl_2+H_2\uparrow\)

\(d,H_2+CuO\underrightarrow{t^o}Cu+H_2O\)

\(e,K_2O+H_2O\rightarrow2KOH\)

\(f,Ca+2H_2O\rightarrow Ca\left(OH\right)_2+H_2\uparrow\)

\(g,2Na+H_2SO_4\rightarrow Na_2SO_4+H_2\uparrow\)

\(h,H_2+FeO\underrightarrow{t^o}Fe+H_2O\)

\(i,P_2O_5+3H_2O\rightarrow2H_3PO_4\)

Answer 2

\(CaO+H_2O\rightarrow Ca\left(OH\right)_2\\ 2Na+2H_2O\rightarrow2NaOH+H_2\\ Zn+2HCl\rightarrow ZnCl_2+H_2\\ H_2+CuO\rightarrow\left(t^o\right)Cu+H_2O\\ K_2O+H_2O\rightarrow2KOH\\ Ca+2H_2O\rightarrow Ca\left(OH\right)_2+H_2\\ 2Na+H_2SO_4\rightarrow Na_2SO_4+H_2\\ H_2+FeO\rightarrow\left(t^o\right)Fe+H_2O\\ P_2O_5+3H_2O\rightarrow2H_3PO_4\)