Question

what does 30% acid solution mean?(any improper answer will be reported no *jk)

Answer 1

Answer:

Weight concentration of a solution is expressed as % w/w. Like before, this stands for weight per weight. So, if the total mass of a 100g solution is made up of 30g hydrochloric acid in 70g of water, then we would express this as hydrochloric acid 30%