MYTUTOR SUBJECT ANSWERS

360 views

How do you answer a long answer question on how buffer systems work?

1) First, state how the buffer is prepared by saying that an excess of acid reacts with a base (include the equation for this reaction)

b) Write the overall equation of the buffer system (remember to show it as reversible) 

c) State the effect of adding an acid to the mixture: there is an increase in H+ concentration, this reacts with the conjugate base and equilibrium shifts left

d) State the effect of adding an alkali: it reacts with H+ ions leading to a fall in H+ conc, equilibrium shifts to right to restore concentrations

n.b the Ka of the buffer system remains the same throughout all the concentration changes 

Ritvij S. A Level Biology tutor, GCSE Biology tutor, A Level Chemistr...

9 months ago

Answered by Ritvij, an A Level Chemistry tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

99 SUBJECT SPECIALISTS

£20 /hr

Abhinav T.

Degree: Medicine (Other) - University College London University

Subjects offered:Chemistry, Physics+ 2 more

Chemistry
Physics
Maths
Biology

“Confirming understanding by verbal confirmation and communication so as to ensure clarity and confidence during the learning process and progression.”

MyTutor guarantee

£24 /hr

James T.

Degree: Chemical Engineering (Masters) - Bath University

Subjects offered:Chemistry, Physics+ 2 more

Chemistry
Physics
Maths
-Personal Statements-

“Second year Engineer. I love problem-solving and hard work! Everyone works differently and I will find the best way for you to learn and make sessions fun!”

£20 /hr

Amelia C.

Degree: Chemistry (Masters) - York University

Subjects offered:Chemistry, Science+ 2 more

Chemistry
Science
Maths
Government and Politics

“Maths and Science tutor, with previous tutoring experience, looking to further help students achieve academic success!”

About the author

Ritvij S.

Currently unavailable: until 22/10/2016

Degree: Medicine (Bachelors) - Imperial College London University

Subjects offered:Chemistry, Maths+ 5 more

Chemistry
Maths
Economics
Biology
.BMAT (BioMedical Admissions)
-Personal Statements-
-Medical School Preparation-

“Hiya! I`m a first year medic at Imperial College London keen to teach a range of subjects to any secondary school pupil. I've been tutoring children since Year 10 and have been tutoring in the sciences and economics since Year 12. The ...”

MyTutor guarantee

You may also like...

Other A Level Chemistry questions

Which molecule has the highest boiling point: methane, ammonia, water or hydrogen fluoride? Explain why.

What is the difference between an acid and a base?

How do you calculate the equilibrium constant, Kc, of a reaction?

Explain how pH changes can be minimised using a mixture of a weak acid and it's conjugate base

View A Level Chemistry tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok