Question

Answer 1

1 
\(4Na+O_2\underrightarrow{t^o}2Na_2O\\ Na_2O+H_2O\rightarrow2NaOH\\ b,4P+5O_2\underrightarrow{t^o}2P_2O_5\\ P_2O_5+3H_2O\underrightarrow{t^o}2H_3PO_4\\ c,2Cu+O_2\underrightarrow{t^o}2CuO\\ CuO+H_2O\underrightarrow{t^o}Cu+H_2O\) 
2 
\(Na+H_2O\rightarrow NaCl+\dfrac{1}{2}H_2\\ CaO+H_2O\rightarrow Ca\left(OH\right)_2\\ SO_2+H_2O\rightarrow H_2SO_3\\ P_2O_5+3H_2O\rightarrow2H_3PO_4\\ Ba+H_2O\rightarrow Ba\left(OH\right)_2\\ b,Zn+2HCl\rightarrow ZnCl_2+H_2\\ Na+2HCl\rightarrow2NaCl+H_2\)

Answer 2

1