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Chemistry
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How do endothermic and exothermic reactions differ?

Endothermic reactions take in heat from the surroundings, whereas exothermic reactions release heat to the surroundings. Exothermic reactions release heat as the energy released from the bonds being made ...

ML
3100 Views

Why is a benzene ring so stable (3 marks)?

The p orbitals on each carbon atom in benzene overlapThere is delocalisation of electrons in the ring (not 3 localised C==C double bonds)This makes benzene more thermodynamically stable than predictedIt t...

AC
Answered by Aadil C. Chemistry tutor
2758 Views

How does pH relate to pKa?

pH measures the concentration of H+ (protons) in an aqueous solution. pKa

CW
2743 Views

What are the reagents used to oxidise an alcohol to a carboxylic acid.

Answer: Sulphuric acid and potassium dichromate.

JA
Answered by John A. Chemistry tutor
1777 Views

Describe the structure of an atom and an ion.

An atom consists of three sub-atomic components; protons, neutrons and electrons. The nucleus contains protons and neutrons. Electrons orbit the nucleus. Protons have a positive charge, electrons have a n...

PJ
Answered by Priya J. Chemistry tutor
6207 Views

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