Odpowiedź :
a) [tex]2K + 2HNO_{3} = 2KNO_{3} + H_{2}[/tex] azotan (V) potasu
b) [tex]3CuO + 2H_{3} PO_{4} = Cu_{3}(PO_{4})_2[/tex][tex]+ 3H_{2} O[/tex] ortofosforan (V) miedzi
c) [tex]Na_{2}O + CO_{2} = NaCO_{3}[/tex] węglan (IV) sodu
d) [tex]2Fe(OH)_{3} + 3N_{2}O_{3} = 2Fe(NO_{2}) _{3} + 3H_{2}O[/tex] azotan (III) żelaza (III)