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1 March, 05:43

Predict the effects of an increase in pressure for each reaction.

N2 (g) + 3H2 (g) → 2NH3 (g)

2503 (9) 2802 (g) + O2 (g)

SnO2 (s) + 2H2 (g) → Sn (s) + 2H20 (g)

Na2CO3 (s) + 2HCl (aq) → CO2 (g) + H2O (l) +

2NaCl (aq)

s

AgNO3 (aq) + Cu (s) → CUNO3 (aq) + Ag (s)

DONE

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Answers (2)
  1. 1 March, 06:35
    0
    An increase in pressure favors the side with fewer particles but has no effect if both sides have the same number of particles.
  2. 1 March, 07:34
    0
    1. Favours the forward reaction

    2. Favours the backward reaction

    3. No effect

    4. No effect

    5. No effect

    Explanation:

    An increase in pressure will cause the reaction to proceed towards the side having a low volume according to Le Chatelier's principle. But, pressure will only have effects if one of the reactant and one of the product is a gas, and will not have effect if the total volume of the reactants and products are the same. So let us attempt the questions above with these understanding:

    1. N2 (g) + 3H2 (g) → 2NH3 (g)

    Total Volume of reactants = 1 + 3 = 4

    Total volume of product = 2

    An increase in pressure will favours the forward reaction since it has a lower volume.

    2. 2SO3 (g) → 2SO2 (g) + O2 (g)

    Total Volume of reactant = 2

    Total volume of products = 2 + 1 = 3

    An increase in pressure will favours the Backward reaction since it has a lower volume.

    3. SnO2 (s) + 2H2 (g) → Sn (s) + 2H20 (g)

    Total Volume of gaseous reactant = 2

    Total volume of gaseous product = 2

    An increase in pressure will have no effect, since the volume of the gaseous reactant and product are the same

    4. Na2CO3 (s) + 2HCl (aq) → CO2 (g) + H2O (l) + 2NaCl (aq)

    An increase in pressure will have no effect since there is no gaseous reactant

    5. AgNO3 (aq) + Cu (s) → CUNO3 (aq) + Ag (s)

    An increase in pressure will have no effect since there are no gaseous reactants nor products
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