Question

含ng硝酸的稀溶液恰好和mg铁粉完全反应,若有n/4g硝酸被还原生成NO,则n;m可能是－

Answer 1

(1)Fe + 4HNO3 == Fe(NO3)3 + NO + 2H2O

---56----4*63

(2)3Fe + 8HNO3 == 3Fe(NO3)2 + 2NO + 4H2O

---56*3--8*63

(3)n/m ==4*63/56 == 9/2

(4)n/m ==8*63/56*3 ==3/1

(5)3/1 < n/m < 9/2