Which of the next salts have better solubility in 1.0M NH3 than in distilled water? Na2CO3, KCl, AgBr, KNO3

Answer 1

The silver salt...........

The silver halides can be represented as a reaction by bricks because they are equally soluble in aqueous solution.

#Ag^(+) + Br^(-) rarr AgBr(s)darr#

Aqueous ammonia can be added to increase the amount of silver ion that remains in solution and participate in the following complexation equilibrium. Silver bromide precipitates from solution as a curdy, cream-colored solid.

#AgBr(s) + 2NH_3(aq) rarr [Ag(NH_3)_2]^(+) + Br^-#

The equilibrium will move to the right hand side as ammonia is added.....These questions can be approached quantitatively given (i) #K_"sp"# for #AgBr#, and (ii) #K_f# for #[Ag(NH_3)_2]^+#.

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Answer 2

Axel Alvarado

AgBr

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.