Question

Viết PTHH thao dãy chuyển hóa

a, Na --> Na2O -->NaOH

b, Ca -->Ca(OH)2 --> CaCO3 ->Cao

c,H2 --> H2O --> H2SO4

Answer 1

\(a.Na\underrightarrow{1}Na_2O\underrightarrow{2}NaOH\\ \left(1\right)4Na+O_2\underrightarrow{t^o}2Na_2O\\ \left(2\right)Na_2O+H_2O\rightarrow2NaOH\\ b.Ca\underrightarrow{1}Ca\left(OH\right)_2\underrightarrow{2}CaCO_3\underrightarrow{3}CaO\\ \left(1\right)Ca+2H_2O\rightarrow Ca\left(OH\right)_2+H_2\\ \left(2\right)Ca\left(OH\right)_2+CO_2\rightarrow CaCO_3+H_2O\\ \left(3\right)CaCO_3\underrightarrow{t^o}CaO+CO_2\\ c.H_2\underrightarrow{1}H_2O\underrightarrow{2}H_2SO_4\\ \left(1\right)2H_2+O_2\underrightarrow{t^o}2H_2O\\ \left(2\right)2H_2O+O_2+2SO_2\rightarrow2H_2SO_4\)