8C.4 Other reactions of halides

Question 1

how do we test for halide ions in a solution

Answer 1

1. add dilute nitric acid
2. add a few drops of a silver nitrate solution
3. add some ammonia solution

Question 2

why do we add nitric acid when testing for halide ions

Answer 2

to remove any anions that might form a precipitate such as CO3

Question 3

what is the precipitate formed by Cl-

Answer 3

white

Question 4

what is the precipitate formed by Br-

Answer 4

cream

Question 5

what is the precipitate formed by I-

Answer 5

yellow

Question 6

what is the general ionic equation and specific equation for the formation of the precipitate

Answer 6

Ag+(aq) + X-(aq) ——-> AgX(s)

AgNO3 + NaCl ——> AgCl + NaNO3

Question 7

why do we add ammonia solution

Answer 7

to make sure which Halide is formed because it can be hard to tell what color the precipitate is based on its colour only (since they look similar) and it works well since each Halide ion has a different solubility to it

Question 8

what Ammonia solution is AgI soluble in

Answer 8

both dilute and concentrated

Question 9

what Ammonia solution is AgI soluble in

Answer 9

only concentrated

Question 10

what Ammonia solution is AgI soluble in

Answer 10

non it’s insoluble by all

Question 11

why does a precipitate dissolve

Answer 11

because of the formation of a complex ion

Question 12

what is the equation between the precipitate and ammonia

Answer 12

AgCl(s) + 2NH3(aq) ——-> {Ag(NH3)2}(aq) + + Cl-(aq)

Question 13

hydrogen Halides react with after to form

Answer 13

an acidic solution

Question 14

what is the reaction between hydrogen halides and water

Answer 14

HX + H2O ——> H20 + X^-

Question 15

what halide forms a reversible reaction when reacting with water and why

Answer 15

F, since it’s only a very weak salt even though it’s very soluble, and maybe cause F is very reactive

Question 16

what is the name of the acid formed in Hydrogen Halide and water reaction

Answer 16

hydrofluoric acid, hydrochloric, hydrobromic, hydroiodic

Question 17

hydrogen halide reacts with ammonia to form a

Answer 17

white ionic salts

Question 18

what is the reaction between Hydrogen halides and ammonia

Answer 18

NH3(g) + HX(g) ——-> NH4X(s)

Question 19

which gas travels diffuse faster NH3 OR HX

Answer 19

NH3 because it has a lower Mr

Question 20

how can we set up an experiment to test the diffusing ability of both NH3 and HX

Answer 20

getting a tube and putting on one end wool soaked with concentrated ammonia and one with concentrated hydrogen halide, and then we see where the white ionic salt is formed and decide which travel faster