a) K + $O_{2}$ —-> $K_{2}$ O b) Zn + $O_{2}$ —-> ZnO c) K + $H_{2}O —> KOH + $H_{2}$ d) $AgNO_{3}$ —-> Ag + $NO_{2}$ + $O_{2}$ e) HgO —-

0 bình luận về “a) K + $O_{2}$ —-> $K_{2}$ O b) Zn + $O_{2}$ —-> ZnO c) K + $H_{2}O —> KOH + $H_{2}$ d) $AgNO_{3}$ —-> Ag + $NO_{2}$ + $O_{2}$ e) HgO —-”

1. $4K+O_{2}—>2K_{2}O$
   $2Zn+O_{2}—>2ZnO$

   $2K+2H_{2}O—>2KOH+H_{2}$
   $2AgNO_{3}—-> 2Ag+2NO_{2}+O_{2}$
   $2HgO—->2Hg+O_{2}$

    

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2. a)  \(4K + {O_2}\xrightarrow{{}}2{K_2}O\)

   b)  \(2Zn + {O_2}\xrightarrow{{}}2ZnO\)

   c)  \(2K + 2{H_2}O\xrightarrow{{}}2KOH + {H_2}\)

   d)  \(2AgN{O_3}\xrightarrow{{}}2Ag + 2N{O_2} + {O_2}\)

   e)  \(2HgO\xrightarrow{{}}2Hg + {O_2}\)

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