Top answers

Chemistry
All levels

What is a buffer, and how does it respond to the addition of acid or alkali?

Firstly, I would try and establish with the tutee what a buffer is and define it. Going through the key aspects of what a buffer is. The standard definition I have for a buffer is 'A solution that minimis...

TW
Answered by Tom W. Chemistry tutor
2954 Views

What factors affect acidity in solution?

Approach this question in a logical manner breaking it down into constituent parts and then explaining these in turn.

  1. Give a defination for acidity i.e. pH: pH=-log10[H+] or pKa=-long10Ka...

TR
Answered by Theo R. Chemistry tutor
2503 Views

2-chloropropanoic acid has a Ka of 1.48E-3. Write an expression for Ka and hence or otherwise, calculate the pH of a 0.35M solution of 2-chloropropanoic acid

In these multiple part questions, it is often the case that the previous part of the question will provide necessary information for answering the following parts, as hinted by the use of 'hence'. It's ve...

CM
Answered by Colin M. Chemistry tutor
8195 Views

Butane, C4H10 is burned completely in excess oxygen, write the balanced chemical formula for the reaction, name the products and type of reaction.

We need to think about the number of atoms of each element in the reactants and ensure these are the same in the products.

This is the basic UNBALANCED equation.

C4H10 ...

CJ
Answered by Callum J. Chemistry tutor
30934 Views

What is the electron arrangement for a Co atom?

Look up Co on the periodic table. Proton number is 27. Therefore, the number of electrons is 27.

1s2, 2s2, 2p6, 3s2, 3p6, 3d7, 4s

EP
Answered by Emma P. Chemistry tutor
2507 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning