G10 Chem 2 Q3 Review

• left (reactants)

• right (products)

• no change

• cannot be determined

• when the reaction container volume is constant

• equal forward and backward rates

• when using a catalyst

• no change in moles of gas

2 H₂S_(g) ⇌ 2 H_2(g) + S_2(g)

The reaction above occurs in a flask at 313 K and initial hydrogen sulfide pressure of 5.00 atm. When the reaction reached equilibrium, the partial pressure of sulfur vapor is found to be 0.15 atm.

If the K_P of this reaction can be expressed in scientific notation as a x 10^b, find a+b (to 3 significant figures)

(a)  

Answer explanation

6.11 x 10^-4

Consider the Haber-Bosch process for ammonia product:

3 H_2(g) + N_2(g) <---> 2NH_3(g) (ΔH = -92 kJ/mol)

To what direction will the reaction shift if nitrogen gas is added into the reaction vessel?

• leftward

  (to reactants)

• rightward

  (to products)

• no change

• cannot be determined

Consider the Haber-Bosch process for ammonia product:

3 H_2(g) + N_2(g) <---> 2NH_3(g) (ΔH = -92 kJ/mol)

To what direction will the reaction shift if the temperature is increased?

• leftward

  (to reactants)

• rightward

  (to products)

• no change

• cannot be determined

Consider the Haber-Bosch process for ammonia product:

3 H_2(g) + N_2(g) <---> 2NH_3(g) (ΔH = -92 kJ/mol)

To what direction will the reaction shift if an osmium catalyst is used?

• leftward

  (to reactants)

• rightward

  (to products)

• no change

• cannot be determined

Consider the Haber-Bosch process for ammonia product:

3 H_2(g) + N_2(g) <---> 2NH_3(g) (ΔH = -92 kJ/mol)

To what direction will the reaction shift if vessel volume is increased?

• leftward

  (to reactants)

• rightward

  (to products)

• no change

• cannot be determined

Choose all options where the underlined species acts as a Bronsted acid.

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