1swcC Fall 2037 28. Consider the following equilibrium: NH.cl(s) NI h(g) + HC0g)

Question

1swcC Fall 2037 28. Consider the following equilibrium: NH.cl(s) NI h(g) + HC0g) Suppose a vessel containing NH CI(s), NH>(g) and HCI(g) is at equilibrium. If the volume of the vesse is instantaneously doubled while keeping the temperature constant, when a new equilibrium is reached, which of the following statements is incorrect? (2) a. The value of K, remains unchanged b-The number of moles of NH4Cl decreases. c. The total pressure is halved. d. The partial pressures of NHs and HCI in the vessel remain unchanged. e. The amount of NHs and HCI doubles. 29. For the following reaction system at equilibrium, which one of the changes below would ca equilibrium to shift to the right? (2) a) Remove some NO. (b) Remove some Br2 c). Add some NOBr (d) Increase the volume of the reaction vessel (e) Decrease the acid-base pair ) Which of the following pairs of species is not a conjugate IO N02t

Explanation / Answer

Q28

initially in equilbirium, if we double the volume, then

concentation of NH3 and HCl will decrease by 2x

therefore,

Q = decreases

meaning that the reaciton must counterbalance this

solid will form gases

so

a) this is true, Kp is constant as long as T is the same

b) true, since NH4Cl must react to form more gases

C) not likely, since Kp remains, so Ptotal = 2*sqrt(Kp)

d) false, they do change, they will increase

e) true, since Kp is related to concentration/partial pressures

Q29

in order to shift to rigth

a) remove products, increase reactants, cool system

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