chapter 9: salts

Question 1

what is a salt?

Answer 1

substance formed when the hydrogen of an acid is partially or completely replaced by a metallic ion / ammonium ion

Question 2

which chlorides are soluble?

Answer 2

all except silver and lead (II)

Question 3

which sulfates are soluble?

Answer 3

all except calcium, barium, lead (II)

Question 4

which nitrates are soluble?

Answer 4

all

Question 5

which carbonates are soluble?

Answer 5

none

Question 6

which hydroxides are soluble?

Answer 6

none

Question 7

which iodides are soluble?

Answer 7

all

Question 8

which bromides are soluble?

Answer 8

all

Question 9

what other salts are soluble?

Answer 9

ammonium + group 1 salts

Question 10

when do we use precipitation?

Answer 10

when salt is insoluble.

Question 11

when do we use excess MOCHA?

Answer 11

when salt is not A1 salt

Question 12

when do we use titration?

Answer 12

when salt is A1 salt

Question 13

what is the reaction for precipitation?

Answer 13

soluble (cation) + soluble (anion) -> insoluble salt

Question 14

what is the reaction for excess MOCHA?

Answer 14

soluble (acid) + insoluble MOC -> soluble salt (non A1 salt)

Question 15

what is the reaction for titration?

Answer 15

soluble (acid) + soluble (alkali) -> soluble salt (A1 salt)

Question 16

how to carry out precipitation?

Answer 16

mix 2 aq solutions to precipitate out insoluble salt

(filter the ppt)

Question 17

how to carry out excess MOCHA?

Answer 17

filter to remove insoluble MOC
-> obtain salt through crystalisation

Question 18

how to carry out titration?

Answer 18

add acid in burette
add alkali in conical flask
find end point