Calculate the volume of chlorine molecules produced at room temperature and pressure, when 234 g of sodium chloride are electrolysed. (1 mole of chlorine molecules has a volume of 24 dm3 at room temperature and pressure). Show your working

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

the answer is 0.42 is that is an option. this question provides no info