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Chemistry

A Level

At what temperature does the reaction become feasible? When ΔH = 492.7 kJmol^-1 and ΔS = 542.6 JK^-1mol^-1.

When a reaction is feasible ΔG = 0. Rearrange the equation ΔG = ΔH - TΔS. So that when ΔG = 0, T = ΔH / ΔS.

Must convert ΔS from JK^-1mol^-1 to ...

Answered by Lily W. • Chemistry tutor

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How is the electrophile formed for the nitration of benzene??

React concentrated sulfuric acid with concentrated nitric acid in the below reaction to yield the nitronium ion.

HNO₃ + 2H₂SO₄ --> NO<...

Answered by Jessie D. • Chemistry tutor

4676 Views

What is the difference between an aldehyde and a ketone, and what type of molecule can they each be reduced to?

Both aldehydes and ketones have a carbonyl functional group (C=O), however in aldhydes the carbonyl carbon atom is the terminal carbon of the chain, whereas in ketones the carbonyl carbon has two alkyl...

Answered by Alastair P. • Chemistry tutor

7394 Views

What are the differences between covalent and ionic bonding?

Covalent bonding is the sharing of pairs of electrons between two non-metallic atoms.

Ionic bonding is where electrons are transferred from one atom to another, usually from a metallic at...

Answered by Alastair P. • Chemistry tutor

2901 Views

What factors affect the equilibrium position and in what way?

The easiest way to think about this is as the 'law of opposites' TemperatureExothermim reactions: If temp is increased then the reaction moves in the direction to reduce this rise of temp by shifti...

Answered by Nathan L. • Chemistry tutor

5842 Views