1. Na → NaOH → NaCl → NaNO₃

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

\(NaOH+HCl\rightarrow NaCl+H_2O\)

\(NaCl+AgNO_3\rightarrow NaNO_3+AgCl\downarrow\)

Ответ: Na → NaOH → NaCl → NaNO₃.