Answer: option B and option C
Explanation:
The right answer for the question that is being asked and shown above is that: "(2) the cathode in a voltaic cell and the anode in an electrolytic cell." At the status of electrode does oxidation occur in a voltaic cell and in an electrolytic cell is that the cathode in a voltaic cell and the anode in <span>an electrolytic cell</span>
<u>Reactivity</u><u> </u><u>series</u><u>:</u><u>-</u>

#1
Ag is found as too less reactive so
#2
No element in universe can displace potassium (K) from its solution as it's most reactive .
#3
Fe is also a reactive metal.
- Only Cupper is less reactive than it
So
#4
- Only Calcium can displace Mg
#5
- Mg and Ni can do ,Aurum(Gold) is least reactive so can't
#6
#7
#8
#9
#10
#11
As Ca is third most reactive metal
#12
Use the ideal gas law:
PV = nRT
so, T = PV / nR
n=0.5
V= 120 dm^3 = 120 L (1 dm^3 = 1 L)
R = 1/12
P = 15,000 Pa = 0.147 atm (1 pa = 9.86 10^{-6} )
Put the values:
T = PV / nR
T = (0.147) (120) / (0.5) (1/12)
T= 426 K