A question of molarity

A few people have asked about the molarity of the acid and base used in our recent Coke Cans video...

Sam and Neil did not make any exact measurements (it was just a demo, not a proper experiment).

However the pair have made a few retrospective estimates and tell me the likely molar concentrations were roughly 12 for the Hydrochloric Acid and 16 for the Sodium Hydroxide.