Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter

    3 A 25.0 cm3 portion of vinegar was transferred to a 100 cm3 volumetric flask and the solution made up to the mark with deionised water. 10.0 cm3 portions of this diluted vinegar required on average 13.60 cm3 of 0.200 mol dm−3 sodium hydroxide for neutralisation.
    The equation for the reaction is:
    CH3COOH  NaOH → CH3COONa  H2O
    a Use the results to calculate the concentration of ethanoic acid in mol dm–3 of the diluted vinegar. (3 marks)
    b Hence calculate the concentration of ethanoic acid in mol dm–3 of the undiluted vinegar. (2 marks)
    c The density of this vinegar is 1.06 g cm–3. Use your answer to part b to calculate the concentration of ethanoic acid as a percentage by mass.
    can u help me with these questions
    •  Official Rep

     Official Rep
    Sorry you've not had any responses about this. Are you sure you've posted in the right place? Here's a link to our subject forum which should help get you more responses if you post there.
Do you agree with the PM's proposal to cut tuition fees for some courses?
Help with your A-levels

All the essentials

The adventure begins mug

Student life: what to expect

What it's really like going to uni


Essay expert

Learn to write like a pro with our ultimate essay guide.

Uni match

Uni match

Our tool will help you find the perfect course for you

Study planner

Create a study plan

Get your head around what you need to do and when with the study planner tool.

Study planner

Resources by subject

Everything from mind maps to class notes.

Hands typing

Degrees without fees

Discover more about degree-level apprenticeships.

A student doing homework

Study tips from A* students

Students who got top grades in their A-levels share their secrets

Study help links and info

Can you help? Study help unanswered threadsRules and posting guidelines

Sponsored content:



Find out how a Higher Education Achievement Report can help you prove your achievements.

Groups associated with this forum:

View associated groups

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

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