IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IB => Sciences => Topic started by: esum0209 on June 06, 2010, 12:39:28 pm

Title: Chem Help!
Post by: esum0209 on June 06, 2010, 12:39:28 pm
How do u do this???

What amount of solute ions, in moles, is present in 50cm3 of 0.10moldm3 sodium hydroxide solution?
Title: Re: Chem Help!
Post by: united2win on August 19, 2010, 04:27:15 pm
ok m8 dead easy....

In simple the question is asking you to calculate the number of moles present in 50cm³ of 0.10dm³ solution of sodium Hydorxide

so you must be familiar with the pyramid Moles = conc x vol (dm³)

therfore moles = 0.1 x (50)/(1000)
                       
                    = 0.005 Moles