19. Given the following reaction: NH.CI (s) S NH3 (g) + HCI (g) AH= +42.1 kcal Suppose the above substances in the reaction are at equilibrium at 600 K in volume V and at pressure P. State whether the partial pressure of NH3 (g) will have increased, decreased, or remained the same in order to the equilibrium to be reestablished following the disturbances of the original system. Note that some solid remains in the flask at all times. Provide a one to two sentence explanation (a) The temperature of the system is increased (b) The volume of the system is increased (c) A quantity of gaseous NH3 is added. (d) A small quantity if NH4C1 is added.

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