Studying the Equilibrium of a weak Acid, HSO _4^+ ion in water what is the initi
ID: 488792 • Letter: S
Question
Studying the Equilibrium of a weak Acid, HSO _4^+ ion in water what is the initial color of the mixtures in wells A-1, A-2, A-3, A-4. and A-5? What color change do you observe when you add Na _2SO _4 solution to well A-1? What color change do you observe as you add NaHSO _4 solution to well A-3? What color change do you observe when you heat the mixture from well A-4 in the well A-4 in the hot-water bath? What color change do you observe when you cool the pipet containing the mixture from well A-5 in the ice-water bath? What color change do you observe when you cool the pipet containing the mixture from well A-4 in the ice-water bath? What color change do you observe when you heat the cooled mixture from well A-5 in the hot-water bath? Write the net ionic equation for the equilibrium involving HSO _4^- ion in this experiment predict the direction in which the equilibrium should shift when you add Na _2SO _4 solution to the mixture in well A-1 Briefly explain Briefly explain in how your observations do or do not support your prediction in (9) predict the direction in which the equilibrium should shift when you add NaHSO _4 solution to the mixture in well A-3 Briefly explain Briefly explain in how your observations do or do not support your prediction in (11) Based upon your observations of heating and cooling the mixture in wells A-4 and A-5, is the forward reaction for the HSO^4^- ion equilibrium endothermic? Briefly explain Write the net ionic equation for the HSO _4^- equilibrium again, but include heat in the equation this timeExplanation / Answer
III. HSO4- in water
(1) Initial color white
(2) light yellow
(3) adding NaHSO4 gives light pink
(4) color hcnages from light red to light brown
(5) cooling gives light pink coloration
(6) Cooling gives a light red color
(7) heating gives a deep red color
(8) net ionic equation,
HSO4- <==> H+ + SO4^2-
(9) Adding Na2SO4 shifts equilibrium to the left handside
(10) The experiment prooves the dissociation of HSO4- by following color change
(11) Adding NaHSO4 shifts equlibrium to right hand side
(12) The color changes when NaHSO4 was added
(13) The reaction is exothermic in nature
(14) net ionic equation,
HSO4- <==> H+ + SO4^2- + heat