Hey! Sign in to get help with your study questionsNew here? Join for free to post
 You are Here: Home

# Help needed on amounts of substances asap

Announcements Posted on
TSR's new app is coming! Sign up here to try it first >> 17-10-2016
1. A piece of zinc was added o 50.0cm^3 of 2.00 mol dm-3 sulfuric acid (an excess). The zinc reacted according to the equation:

Zn + H2SO4 ---> ZnSO4 + H2

The remaining sulfuric acid required 27.50cm^3 of 0.200 mol dm-3 sodium hydroxide for neutralisation.

2NaOH + H2SO4 ---> Na2SO4 + H2O

1) Calculate the number of moles in 50.0cm^3 of 2.00 mol dm-3 sulfuric acid
2)Calculate the number of moles in 27.50cm^3 of 0.200 mol dm-3 of sodium hydroxide
3) use the second equation to calculate the number of moles of sulfuric acid remaining after the reaction with zinc
4) Use your answer from parts (1) and (3) to calculate the number of moles of sulfuric acid which reacted with the zinc
5) Hence calculate the mass of zinc that reacted
2. What have you tried?

Write a reply…

Submit reply

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
that username has been taken, please choose another Forgotten your password?
2. this can't be left blank
this email is already registered. Forgotten your password?
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
your full birthday is required
1. Oops, you need to agree to our Ts&Cs to register
2. Slide to join now Processing…

Updated: October 9, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

### How does exam reform affect you?

From GCSE to A level, it's all changing

### Who would you like to thank?

Poll
Study resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.