Using the relative eo values, determine which of the following reactions are electrically possible. cu2+(aq) + zn(s) zn2+(aq) + cu(s) this equation shows that cu is . this equation shows that zn is . can this redox reaction take place?

- This reaction shows that Cu is reduced and Zn is oxidized and the reaction takes place spontaneously.

Explanations:- Standard reduction potential for Zn is -0.76 V and for Cu it is +0.34 V.

More negative is the standard reduction potential more easy the oxidation is. Since the standard reduction potential for Zn is more electron negative, it is oxidized and Cu is reduced. The same is happening in the given equation and so it is spontaneous.

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g

they are made of gases.

they have a spherical shape.

they make energy through fusion.