Can someone write these out as a skeleton equation and then balance them?
a) copper(II) oxide + hydrogen → copper + water
b) lead(II) nitrate + potassium → lead + potassium nitrate
c) Calcium + water → calcium hydroxide + hydrogen.
d) lead(II) sulphide + oxygen → lead + sulphur dioxide
e) hydrogen sulphide → hydrogen + sulphur
Balancing Chemical Equations?
2017-02-15 1:59 pm
回答 (1)
2017-02-15 2:09 pm
a)
Skeleton equation: CuO + H₂ → Cu + H₂O
Balanced equation: CuO + H₂ → Cu + H₂O
b)
Skeleton equation: Pb(NO₃)₂ + K → Pb + KNO₃
Balanced equation: Pb(NO₃)₂ + 2 K → Pb + 2 KNO₃
c)
Skeleton equation: Ca + H₂O → Ca(OH)₂ + H₂
Balanced equation: Ca + 2 H₂O → Ca(OH)₂ + H₂
d)
Skeleton equation: PbS + O₂ → Pb + SO₂
Balanced equation: PbS + O₂ → Pb + SO₂
e)
Skeleton equation: H₂S → H₂ + S
Balanced equation: H₂S → H₂ + S
OR:
Skeleton equation: H₂S → H₂ + S₈
Balanced equation: 8 H₂S → 8 H₂ + S₈
Skeleton equation: CuO + H₂ → Cu + H₂O
Balanced equation: CuO + H₂ → Cu + H₂O
b)
Skeleton equation: Pb(NO₃)₂ + K → Pb + KNO₃
Balanced equation: Pb(NO₃)₂ + 2 K → Pb + 2 KNO₃
c)
Skeleton equation: Ca + H₂O → Ca(OH)₂ + H₂
Balanced equation: Ca + 2 H₂O → Ca(OH)₂ + H₂
d)
Skeleton equation: PbS + O₂ → Pb + SO₂
Balanced equation: PbS + O₂ → Pb + SO₂
e)
Skeleton equation: H₂S → H₂ + S
Balanced equation: H₂S → H₂ + S
OR:
Skeleton equation: H₂S → H₂ + S₈
Balanced equation: 8 H₂S → 8 H₂ + S₈
收錄日期: 2021-04-20 19:35:29
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