Color of the initial Al^3+ solution. Solution after the initial 2 drops of NAOH
ID: 502828 • Letter: C
Question
Color of the initial Al^3+ solution. Solution after the initial 2 drops of NAOH were added. Solution after the additional 3 drops of NAOH were added. Solution after blowing CO_2 through it. Which reagents shifted the equilibrium to the right? Give your evidence. Which reagents shifted the equilibrium position to the left? Give your evidence. Explain these shifts in terms of lessthanorequalto Chatelier's principle. Include the chemical equations in the explanation. Write the chemical equations to account for the last two changes: a. After the additional 3 drops of NAOH were added. b. After the CO_2 was added.Explanation / Answer
Q7.
We are talking about
Al3+ and OH- addition
so
Al+3(aq) + 3OH-(aq) <--> Al(OH)3(s)
clearly, as we add more OH- ions, from the base, then we increase the reactants concentrations, which the equilbirium, according to Le Chatelier, will favour even more production of Al(OH)3(s) in precipitation.
If we remove Al(OH)3(s) from solution, then we will favour Al+3 and OH- ions in solution.
Addition of H+ to solution will favour Al(OH)3(s) from solid state to ionic phase, since reactants are decreasing