Question

calculate the number of moles of h2so4 present in 50 ml of 0.2 M h2so4​

Answer 1

Answer:

5 litres of 0.4 M sulphuric acid solution would contain 2 moles of sulphuric acid.

So, how did I get that answer? Well, M, or molar, is just the number of moles per litre. Or put another way, mol / l.

Therefore I can express 0.4 M as 0.4 mol / l. As I have 5 litres then I have 5 x 0.4, which is 2.

Answer 2

Answer:

No of moles of H2SO4 in 50 mL of 0.2 M= 0.2 x50 /1000 = 10 /1000

Total moles in mixture = 25/1000 =0.025M