(1) c =" 4g+10h " (2) c-b="2d" +3f (3) 2d +3f ="3g+8h" (4) 6
(1)元素守恒:c="2k " 3b="g+h+k " 即:6b="2g+2h+c" 又:b="g+2h " 故:c = 4g+10h
(2)电荷守恒:c="2d+3f+b" 即:c-b=2d+3f
(3)电子转移守恒;3g+8h="2d+3f"
(4)当Fe→Fe 2+,NO 3 -→N 2O时,b有最小值。b=12×2/4 = 6
当Fe→Fe 3+,NO 3 -→NO时,b有最大值。b=12×3/3 =" 12" 故有:6
把6
1年前
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