Viết các PTHH a) p ==>P2O5 ===>H2PO4 b) Na==> Na2o===> NaOH c) H2==>fe===>fecl2

Question

Viết các PTHH
a) p ==>P2O5 ===>H2PO4
b) Na==> Na2o===> NaOH
c) H2==>fe===>fecl2

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Genesis 1 năm 2021-10-09T02:34:15+00:00 2 Answers 8 views 0

Answers ( )

    0
    2021-10-09T02:35:46+00:00

    $a,$

    $4P+5O_2\xrightarrow{t^o} 2P_2O_5$

    $P_2O_5+3H_2O\xrightarrow{} 2H_3PO_4$

    $b,$

    $4Na+O_2\xrightarrow{t^o} 2Na_2O$

    $Na_2O+H_2O\xrightarrow{} 2NaOH$

    $c,$

    $Fe_2O_3+3H_2\xrightarrow{t^o} 2Fe+3H_2O$

    $Fe+2HCl\xrightarrow{} FeCl_2+H_2↑$

    chúc bạn học tốt!

    0
    2021-10-09T02:36:10+00:00

    a)

    4P + 5O2 → 2P2O5

    3H2O+P2O5→2H3PO4

    b)

    4Na + O2 → 2Na2O

    H2O + Na2O → 2NaOH

    c)

    4H2 + Fe3O4 → 3Fe + 4H2O

    Fe + Cl2 → FeCl2

     

     

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