CW- Identification of ions

Question 1

Solubility rules:
All compounds of gp.1 are: ____

Answer 1

SOLUBLE

Question 2

Solubility rules:
All nitrates are: ____

Answer 2

SOLUBLE

Question 3

Solubility rules:
All halides are: ____

Answer 3

Soluble EXCEPT if they contain Ag or Pb

Question 4

Solubility rules:
All sulfates are: ____

Answer 4

Soluble EXCEPT if they contain Ca, Sr, Ba, Pb

Question 5

Solubility rules:
All hydroxides are: ____

Answer 5

INSOLUBLE

Question 6

Solubility rules:
All carbonates are: ____

Answer 6

INSOLUBLE

Question 7

Solubility rules:
All oxides are: ____

Answer 7

INSOLUBLE

Question 8

What is the flame test and what does it test for?

Answer 8

The flame test is a test that involves placing various unknown compounds (on a needle cleaned in acid) in a flame and observing the colour change, which determines the result.

This tests for multiple cations (positive ions)

Question 9

What are the flame test results for:
K+
Na+
Li+

Answer 9

Lilac flame
Orange/yellow flame
Bright red flame

Question 10

What are the flame test results for:
Ca2+
Cu2+
Ba2+

Answer 10

Brick red flame
blue/green flame
apple green(light green) flame

Question 11

what are the precipitation reaction results for:
Cu2+
Fe2+
Fe3+
Al3+
Zn2+
Cr3+

Answer 11

Blue Solid
Green solid (then orange)
Orange/brown solid
White solid
White solid
Green/grey solid

Question 12

Acid + base =?

Answer 12

Salt + Water

Question 13

Acid + carbonate=?

Answer 13

Salt + water + carbon dioxide