Electrolysis of molten NaCl in a Downs cell is the major isolation step in the production of sodium metal (Section 22.4). Assuming that 215 g of Na metal forms,(b) How many coulombs are required?

Respuesta :

901,310 C are required for electrolysis of molten NaCl.

How to find the number of moles ?

To find the number of use this expression

Number of moles = [tex]\frac{\text{Given mass}}{\text{Molar mass}}[/tex]

Here,

Mass of Na = 215 g

Molar mass of Na = 23 g/mol

Now write the half reaction for electrolysis of molten NaCl

Na⁺ + 1e⁻ → Na(s)

From the above reaction we can say that 1 moles of electrons are transferred to deposit 1 mol of Na metal.

Now put the values in above expression

Number of moles = [tex]\frac{\text{Given mass}}{\text{Molar mass}}[/tex]

                             = [tex]\frac{215\ g}{23.0\ \text{g/mol}}[/tex]

                             = 9.34 mol

Charge carried by 1 mole e⁻ = 96500 C

Charge carried by 3.75 mole e⁻ = [tex]9.34\ \text{mole}\ e^- \times \frac{96500\ C}{1\ \text{mole}\ e^{-}}[/tex]

                                                     = 901,310 C

Thus from the above conclusion we can say that 901,310 C are required for electrolysis of molten NaCl.

Learn more about the Moles here: brainly.com/question/15356425

#SPJ4