Reply 1
Original post by Janaat a
25g of sulfuric acid is dissolved in water to make 200cm cubed of concentration sulfuric acid solution. what is the concentration of this solution
Work out mol of sulfuric acid from mass and Mr
Divide answer by the number of litres in the solution.
Reply 3
Original post by Fatihaah
1.
turn the 200cm 3 into dm3
2.
moles of H2SO4 , using mr x mass = moles
3.
use formula for concentration = moles / volume
Are you sure the formula you’ve given in step 2 is correct?
If you check the units, you’ll find that Mr x mass will give you a quantity in g^2 mol^-1, which isn’t a meaningful unit.
I think you mean moles = mass/Mr (or moles x Mr = mass, if you rearrange it)
Original post by UtterlyUseless69
Are you sure the formula you’ve given in step 2 is correct?
If you check the units, you’ll find that Mr x mass will give you a quantity in g^2 mol^-1, which isn’t a meaningful unit.
I think you mean moles = mass/Mr (or moles x Mr = mass, if you rearrange it)
If you check the units, you’ll find that Mr x mass will give you a quantity in g^2 mol^-1, which isn’t a meaningful unit.
I think you mean moles = mass/Mr (or moles x Mr = mass, if you rearrange it)
(edited 11 months ago)
Quick Reply
Related discussions
- Chemistry
- Oxford Interviews—Chemistry
- Titration titre volume question
- acids and bases HELP
- Edexcel A Level Chemistry Paper 3 Tuesday 21th June 2024 9CH0/02
- Chemistry question help please
- Buffer calculation question A level chemistry help
- chemistry bases help please
- how to identify strong acids and alkalis???
- Help with this chemistry question? (A2, acid-base equilibria)
- help with this acids base question
- error in PMT question?
- What is logarithms (chemistry help)
- Chemistry A-Level: Mechanism Help Please x
- Chemical calculations
- Chemistry F325- End Point/ Equivalence Point
- Chemistry Calculation
- WJEC A-Level Biology Unit 3 (A2) [7th June 2023] Exam Chat
- How hard is ACID-Base equilbira in a level chemistry ?
- chemistry aqa a-level question help
Latest
Trending
Last reply 1 week ago
AQA A level chemistry synthetic routes map - what is the best one to memorise?Last reply 2 weeks ago
is pcl5 and water nucleophilic or electrophilic substitution?Last reply 1 month ago
OCR AS Level Chemistry A Paper 2 - Depth ( 21th May 2024)