1. Science
  2. Other
  3. what volume of 2 potassium pomegranate solution is required in...

Question: what volume of 2 potassium pomegranate solution is required in...

Question details

what volume of 2% potassium pomegranate solution is required in order to provide 200ml of 75mg/5ml potassium permanganate solution?

 

The approach below is what I have received from other tutors, but I do not understand how or why has 2%  been written as 2000mg/100ml? because my understanding of 2% is this (0.02) 

Answer from other tutors: 

75mg/5ml -> need 200ml -> 75mg x 200/5 = 3000mg 

2% solution = 2000mg/100ml

we need 3000mg 

= 100ml x 3000mg/2000mg

= 150ml

we need 150ml of potassium pomengranate to make 200ml of 75mg/5ml potassium pomengranate solution 

Solution by an expert tutor
Blurred Solution
This question has been solved
Subscribe to see this solution