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About me

About me:

I am a Biology student at Durham University. Since I was young, I've loved science and hope to share my interests with you. I never had access to a tutor and had to struggle through my GCSEs and A-Levels alone- I want to help students and give them the support that I wish I had.

I am an experienced private tutor, alongside both assisting with and leading classes with children of all ages. All in all, I am a confidentfriendly tutor with a great enthusiasm for my subject.

My sessions:

I believe that there is only so much a student can be taught. In my sessions, you will not just be taught, but you will learn. Learning, in my experience, requires the student to be actively engaged; as such, my sessions will be engaging and interesting!

I will teach and reinforce concepts in the same way that I taught myself, and that earned me a set of top grades, until you are confident. I also want to help you learn at a comfortable pace for you, with a session tailored for you and your exam board. 

I am not just here to teach you science and maths. Any questions about school that you have, be it how to study in your own time or how to write a personal statement, I will be happy to help. I will teach you the techniques that I use and that I know lead to success, so that you will achieve your best.

Any questions?

Free free to message me or book a 'Meet the Tutor' session, both available through this site. Let me know what you want me to help with and your exam board, and we'll get started right away!

I very much look forward to meeting you.

Subjects offered

SubjectLevelMy prices
Biology A Level £24 /hr
Chemistry A Level £24 /hr
Maths A Level £24 /hr
Biology GCSE £22 /hr
Chemistry GCSE £22 /hr
Maths GCSE £22 /hr
Science GCSE £22 /hr

Qualifications

QualificationLevelGrade
BiologyA-LevelA*
DramaA-LevelA*
ChemistryA-LevelA
MathsA-LevelA
Disclosure and Barring Service

CRB/DBS Standard

No

CRB/DBS Enhanced

No

Ratings and reviews

5from 18 customer reviews

RICHARD (Parent) June 19 2016

Has been an amazing help

RICHARD (Parent) May 25 2016

Great tutorial

RICHARD (Parent) May 4 2016

Great first tutorial.

Osasuyi (Student) May 1 2016

A very intelligent and understandable tutor
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Questions Joe has answered

How do you calculate the pH of a weak acid?

Strong acids dissociate fully in solution. Examples of strong bases include HCl and H2SO4. Organic acids, such as methanoic acid or oxalic acid, as well as some inorganic acids such as hydrogen fluoride, are weak acids. A weak acid differs to a strong acid in that it does not fully dissociate ...

Strong acids dissociate fully in solution. Examples of strong bases include HCl and H2SO4. Organic acids, such as methanoic acid or oxalic acid, as well as some inorganic acids such as hydrogen fluoride, are weak acids.

A weak acid differs to a strong acid in that it does not fully dissociate in solution (it does not release all of it's potential hydrogen ions). This means that you cannot use the usual formula (pH=-log
10[H^+]) by simply letting [H^+] equal the concentration of the acid. Instead, you must use the acid dissociation constant, Ka. Where, at equilibrium, [H^+] is the hydrogen ion concentration, [A^-] is the dissociated acid concentration, and [HA] is the concentration of the undissociated acid:
 

Ka = ([H^+][A^-])/[HA]

If we assume that when the weak acid dissociates, [H^+]=[A^-], then:
 

Ka = ([H^+]^2)/[HA]

If you know the equilibrium concentration of the acid and the Ka (which you will usually be given), you can rearrange this formula to give [H^+], which should be all you need to work out the pH.

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2 years ago

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