Answer to Question #162072 in General Chemistry for Rory

Question

What volume of hydrogen would be obtained at a sodium chloride concentration of 2.00 mol/dm³?

                          Show how you obtained this value.                                                             

Answer 1

NaCl concentration is given as 2M.

from the electrolysis shown in figure :

using stoichiometry for 2 moles of chloride ion at anode one mole of H$_2$ gas is produced.

so moles of hydrogen gas formed is 22.4L.

At STP one mole of H₂ is 22.4 L