How much water should we add to prepare #2%# acetic acid from #5%# acetic acid?

1 Answer
Apr 10, 2017

Answer:

To prepare 2% acetic acid from #5%# acetic acid, we must add one and a half times water.

Explanation:

#5%# acetic acid contains

#5# units of acetic acid in #100# units of water

for #2%# of acetic acid we need

#2# units of acetic acid in #100# units of water

or #5# units of acetic acid in #100/2xx5=250# units of water.

i.e. in each #100ml# of #5%# acetic acid we should add #150ml# of water i.e. one and a half times water

Hence, to prepare 2% acetic acid from #5%# acetic acid, we must add one and a half times water.