硫化铅与氧气反应的方程式里面的电子得失情况2PdS+3O2=2PdO+2SO2how many electrons are lost by sulphur and gained by oxygen?A S lost 6 and 4 gainde OB S lost 0 and 4 gained OC S lost 6 and 2 gained OD S lost 8 and 4 gained OE none of
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![硫化铅与氧气反应的方程式里面的电子得失情况2PdS+3O2=2PdO+2SO2how many electrons are lost by sulphur and gained by oxygen?A S lost 6 and 4 gainde OB S lost 0 and 4 gained OC S lost 6 and 2 gained OD S lost 8 and 4 gained OE none of](/uploads/image/z/11189622-30-2.jpg?t=%E7%A1%AB%E5%8C%96%E9%93%85%E4%B8%8E%E6%B0%A7%E6%B0%94%E5%8F%8D%E5%BA%94%E7%9A%84%E6%96%B9%E7%A8%8B%E5%BC%8F%E9%87%8C%E9%9D%A2%E7%9A%84%E7%94%B5%E5%AD%90%E5%BE%97%E5%A4%B1%E6%83%85%E5%86%B52PdS%2B3O2%3D2PdO%2B2SO2how+many+electrons+are+lost+by+sulphur+and+gained+by+oxygen%3FA+S+lost+6+and+4+gainde+OB+S+lost+0+and+4+gained+OC+S+lost+6+and+2+gained+OD+S+lost+8+and+4+gained+OE+none+of)
硫化铅与氧气反应的方程式里面的电子得失情况2PdS+3O2=2PdO+2SO2how many electrons are lost by sulphur and gained by oxygen?A S lost 6 and 4 gainde OB S lost 0 and 4 gained OC S lost 6 and 2 gained OD S lost 8 and 4 gained OE none of
硫化铅与氧气反应的方程式里面的电子得失情况
2PdS+3O2=2PdO+2SO2
how many electrons are lost by sulphur and gained by oxygen?
A S lost 6 and 4 gainde O
B S lost 0 and 4 gained O
C S lost 6 and 2 gained O
D S lost 8 and 4 gained O
E none of the above
硫化铅与氧气反应的方程式里面的电子得失情况2PdS+3O2=2PdO+2SO2how many electrons are lost by sulphur and gained by oxygen?A S lost 6 and 4 gainde OB S lost 0 and 4 gained OC S lost 6 and 2 gained OD S lost 8 and 4 gained OE none of
硫化铅中的硫为-2价,二氧化硫中的硫为+4价,化学计量系数都是2,所以2个分子的硫化铅失去2*(4-(-2))=12,由于得失电子是守恒的,所以氧得到了12个电子,所以综合答案,选择D
solution: C
C 3个氧气分子得12个电子,那么一个氧原子就得2个电子;2个硫原子失12个电子,1个就失6个电子