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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...

Answered by Colin M. • Chemistry tutor

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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 ...

Answered by Callum J. • Chemistry tutor

28247 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

Answered by Emma P. • Chemistry tutor

2110 Views

What are buffers and how do they work?

Buffers are solutions of acid and base which work to minimise changes in pH following the addition of small amounts of acid or base. Ideal buffers are made of a weak acid (i.e. one which does not fully di...

Answered by Samuel J. • Chemistry tutor

7302 Views

Which compound has a higher boiling point and why: water (H2O) or methane (CH4)?

Water has a higher boiling point because the hydrogen bonds that form among water molecules are stronger than the Van der Waals interactions among methane molecules, thus more energy must be provided in o...

Answered by Maria D. • Chemistry tutor

39508 Views