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Kemi

ligevægt kemi

24. september 2013 af caroline1991 (Slettet) - Niveau: B-niveau

jeg har to spørgesmål, som jeg håber i er venlige og hjælp mig med dem:

a) vi betragter ligevægt:

CH₄(g)+H₂O(g) <-> CO(g) + 3H₂(g)

i hvilken retning vil ligevægten forskydes ved et indgreb hvor:

1) der tilføres mere methan til systemet?

2) der hurtigt fjernes carbonmonoxid fra systemet?

3) der hurtigt fjernes vand fra systemet?

b) udfyld skemaet ved med pile at vis, hvilken vej de anførte indgreb vil forskyde hver af ligevægtssystemerne:

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</o:p>

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</o:p>

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[NO_2(g)] øges</o:p>

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[NO_(g)] øges</o:p>

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[O_2(g)] øges</o:p>

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[N_2(g)] øges</o:p>

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Trykket øges</o:p>

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1)</o:p>

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N_2(g)+ O_2(g)D 2NO_(g)</o:p>

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-</o:p>

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2)</o:p>

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2NO_(g)+ O_2(g)D2NO_2(g)</o:p>

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-</o:p>

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3)</o:p>

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N₂O_4(g)D2NO_2(g)</o:p>

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-</o:p>

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-</o:p>

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-</o:p>

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4)</o:p>

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2N₂O_(g)D2N_2(g)+ O_2(g)</o:p>

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-</o:p>

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-</o:p>

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5)</o:p>

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NO_(g)+ NO_2(g)DN₂O_3(g)</o:p>

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-</o:p>

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-</o:p>

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Brugbart svar (0)

Svar #1
24. september 2013 af LubDub (Slettet)

a)

CH_{4 (g)} + H₂O _(g) <----> CO _(g) + 3 H₂ (g)

Ved ligevægt:

                      [CO] • [H₂]³
         Y =   ------------------ = K_c
                    [CH₄] • [H₂O]

1) Der tilføres CH_{4 (g)} Y < K_c: Ligevægten forskydes mod højre

2) Der fjernes CO _(g) Y < K_c: Ligevægten forskydes mod højre

3) Der fjernes H₂O _(g) Y > K_c: Ligevægten forskydes mod venstre

Brugbart svar (0)

Svar #2
24. september 2013 af LubDub (Slettet)

b)
se

Vedhæftet fil:ligevægtsforskydning.doc

Skriv et svar til: ligevægt kemi

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