Na--->NaOH--->NaCl--->NaNo3--->Na2SO4
2Na +2H2O = 2NaOH +H2 NaOH +HCl =NaCl + H2O NaCl +AgNO3 = AgCl + NaNO3 2NaNO3+2H2SO4+Cu=2NO2+CuSO4+Na2SO4+2H2O