The enthalpy change in the reaction: CO (g) + 2 H2 (g) ⇄CH3OH (g)is –18 kJ / mol. Will the amount of CH3OH present at equilibrium INCREASE, DECREASE, or STAY THE SAME when the following stresses are applied to the system?(11a): Adding carbon monoxide gas(11b): Removing hydrogen gas(11c): Increasing the volume of the system(11d): Increasing the temperature

Consider the following system at equilibrium where AH = 268 kJ and Kc = 5.10 × 10-6, at 548 K. NH4Cl(s) NH3(g) + HCl(9) The production of NH3(g) is favored by (indicate true or false): decreasing the temperature: decreasing the pressure (by changing the volume): increasing the volume: adding NH4Cl: adding HCl:

Equilibrium: 7. Write the equilibrium expression, K, for the following reactions: 2NH, (g) + CO2 (g) N,CH,0 (s) + H,0 (g) K= N2 (g) + 02 (g) 2 NO (g) K= 8. Consider the following reaction at equilibrium. 2S0, (g) 2S0, (g) + 02 (g) Predict the affect on equilibrium (will it shift left, shift right or no change?): a. Oxygen gas is removed: b. The volume is increased: c. The pressure is increased: d. SO, is added: e. SO, is added:

Consider the following system: 4 NH3(g) + 3 O2(g) -> 2 N2(g) + 6 H2O(l) AH = -1530.4 kJ (a) How will the amount of ammonia at equilibrium be affected by      (1) removing O2(g)?      (2) adding N,(g)?      (3) adding water?      (4) expanding the container at constant pressure?      (5) increasing the temperature? (b) Which of the above factors will increase the value of K? Which will decrease it?

Consider the following equilibrium: 2NO(g) + Cl₂ (g) 2NOCI (g) AG=-41. kJ Now suppose a reaction vessel is filled with 1.55 atm of chlorine (C1₂). about this system: T Under these conditions, will the pressure of NOCI tend to rise or fall? Is it possible to reverse this tendency by adding NO? In other words, if you said the pressure of NOC1 will tend to rise, can that be changed to a tendency to fall by adding NO? Similarly, if said the pressure of NOCI will tend to fall, can that be changed to a tendency to rise by adding NO? If you said the tendency can be reversed in the second question, calculate the minimum pressure of NO needed to reverse it. Round your answer to 2 significant digits. and 4.77 atm of nitrosyl chloride (NOCI) at 683. °C. Answer the following questions Orise Ofall yes Ono atm O x10 X S

Consider the following equilibrium: 2NO₂(g) → N₂O4 (g) AG = -5.4 kJ Now suppose a reaction vessel is filled with 0.202 atm of nitrogen dioxide (NO₂) at 504. °C. A Under these conditions, will the pressure of NO₂ tend to rise or fall? Is it possible to reverse this tendency by adding N₂O4? In other words, if you said the pressure of NO₂ will tend to rise, can that be changed to a tendency to fall by adding N₂O4? Similarly, if you said the pressure of NO₂ will tend to fall, can that be changed to a tendency to rise by adding N₂O4? If you said the tendency can be reversed in the second question, calculate the minimum pressure of N₂O needed to reverse it. V Round your answer to 2 significant digits. Orise fall O yes no atm 0

Consider the following exothermic reaction, used to obtain lead from its ore:2PbS (s) + 3O2 (g) + 2CO (g) ↔ 2 Pb (l) + 2SO2 (g) + 2CO2 (g)Assume that this reaction is in equilibrium. Given the following changes to the system, will the quantity of lead increase, decrease, or remain the same?i) adding more lead sulfide.ii) Adding more carbon monoxide.iii) removing some oxygen.