Inorganic

Question 1

CuSO4 + HCl->?

What colour

Answer 1

(CuCl4)2- yellow

Question 2

When mentioning empirical formula of a complex what must be included

Answer 2

Ratio and overall charge

Question 3

Define enthalpy hydration

Answer 3

When one mole of gaseous ions become hydrated in water

Question 4

What are the directions of an energy cycle

Answer 4

Gaseous ions

|                          |
|                          V
|                       Enthalpy of hydration
|
|          Enthalpy change of solution 
|                         |
V                        |
Ionic lattice

Question 5

Explain using a calculation why X dissolves in water at 25 degrees despite being endothermic

Answer 5

Delta pG=delta H -Tde,taS

Delta g is less than 0

Question 6

12->I2(s). What happens when AgNO3 is added

Answer 6

Yellow precipitate equilibrium shifts to the left to get more I2 (Aq)

Question 7

What happens when I2 reacts with OH-

Answer 7

3I2 + 6OH- -> 5I- + IO3- + 3H2O

Question 8

What happens when a base eg NaOH is added to a buffer

Answer 8

H+ reacts with OH-

Equilibrium shifts to the right

Question 9

Adding H+ to buffer

Answer 9

H+ + A- -> HA

Equilibrium shifts to the left

Question 10

When drawing a cell diagram what must you not forget to show

Answer 10

Direction of electrons

Question 11

Nickel in a water complex forms nickel cyanide and water. What type of reaction is this?

Answer 11

Ligand substitution

Question 12

Nickel in a water complex forms nickel hydroxide. What type of reaction is this?

Answer 12

Precipitation

Question 13

Electronic configuration of Cu1+

Answer 13

1s2 2s2 2p6 3s2 3p6 3d9