QUESTION ONE (a) What are concentration cells? Describe and discuss an electrolyte
concentration cell without transference
1101
(b) Calculate the EMF of the electrode concentration cell
121
PL Halpu). HCI. Hapa): Pt at 25°C if p = 600 torr and p2 = 400 torr
(c) Predict whether the following reaction would proceed spontaneously as
written at 298 K
Cd(s)
Fe (aq)
Cd2(aq)
Fe(s)
Given that [Cd?'y = 0.15M and [Fe2+] = 0.68M
The standard reduction potentials of cadmium and iron are -0.403 and -0.447
volts respectively
[3]
(d) Explain reversible cell? Name the different types of reversible cell (5)

During metamorphic processes, increased pressure and temperature can affect the of minerals in rock. rocks subjected to very high pressure are typically than others because mineral grains are squeezed together, and the atoms are more closely packed. during metamorphic processes, water facilitates the transfer of ions between and within minerals, which can the rate at which metamorphic reactions take place. the growth of new minerals within a rock during metamorphism has been estimated to be about per million years. metamorphism is commonly associated with convergent plate boundaries, where two plates move toward each other. during contact metamorphism, a large intrusion will contain thermal energy and will cool much more slowly than a small one. metamorphosed sandstone is known as the metamorphic rock made from metamorphosed shale, was once used to make blackboards for classrooms.

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

Which type of bond is present in hydrogen sulfide (h2s)? the table of electronegativities is given. a. hydrogen b. ionic c. nonpolar covalent d. polar covalent