Mọi người giúp mk vs cần lắm ùi ạ..thanks mọi ng nhìu

V

vuthienthien

[TEX]1) 2KMnO_4 + H_2SO_4 + 3H_2S -----> K_2MnO_4 + MnSO_4 + 3S + 4H_2O[/TEX]

[TEX]3) 2KMnO_4 + 5SO_2 + 2H_2O -----> 2H_2SO_4 + 2MnSO_4 + K_2SO_4[/TEX]

[TEX]4) 3FeS + 12HNO_3 ------> Fe(NO_3)_3 + Fe_2(SO_4)_3 + 9NO + 6H_2O[/TEX]
 
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