Top answers

How do you calculate the pH of a weak acid?

Lets say we have 0.89 mol dm-3 of CH3COOH, a weak acid, with a ka of 1.7X10^-5.We want to find Ph, but to do this we first need to know [H+] because PH = -log10[H+].Because CH3COOH is a weak acid, it only pa...
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Answered by Amy H. • Chemistry tutor
12801 Views

What's the difference between covalent and ionic bonding?

Covalent bonding happens when two molecules share a pair of electrons. For example in hydrogen chloride (HCl). Ionic bonding is when two oppositely charged ions are attracted to each other to form a lattice....
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Answered by Isobel S. • Chemistry tutor
2840 Views

How useful are introductions and conclusions?

This is always a divisive issue as some will tell you they're great and others that they're not necessary, and in the end it tends to depend on where you're using them and what for. Ultimately, I would say t...
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Answered by Dan E. • History tutor
2445 Views

What is epistemology?

Technically epistemology is the study of knowledge, but at A-level, you need to know that it's the weight behind any philosophical argument and will be incredibly useful to include in any theory you use. For...
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3181 Views

How to write a successful personal statement

Writing a personal statement is difficult, especially as your school is saying one thing, your parents another and universitys a couple different thing! In my experience schools emphasise the importance of h...
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8059 Views