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Chemistry
A Level

Describe why phenol reacts more readily with bromine than benzene does.

(labelled diagrams of both benzene and phenol would be used to show the overlapping p orbitals above and below the plane of the molecule, with phenol showing the partial delocalisation of the oxygen lone ...

AJ
Answered by Abigail J. Chemistry tutor
7712 Views

What is the oxidation number of Mn in K2MnO4?

The oxidation number of an ion is the same as its charge. We know that the oxidation number of K+ is +1 and the oxidation number of O2- is -2, but we don't know the oxidation number of Mn so let's call th...

AC
Answered by Alex C. Chemistry tutor
47107 Views

An acid can be either strong or weak, explain the difference between strong and weak acids.

The strength of an acid refers to the level of which it dissociates in an aqueous solution. Dissociation is a process in which molecules can split into smaller ones, atoms or ions. In the case of an acid,...

IM
Answered by Iona M. Chemistry tutor
6273 Views

Explain the bonding and thus the properties of a carbon allotrope

Diamond- Each carbon atom is bonded to four other carbon atoms with strong covalent bonds in a tetrahedral structure (with bond angles of 104.9 degrees). As all four valence electrons are used for bonding...

TD
1888 Views

24.5g of CH3CH2CH2Br was reacted with ammonia to form CH3CH2CH2NH2 at a 75.0% yield, calculate the mass of the product formed.

The first step is to calculate the moles of the reactant CH3CH2CH2Br. To do this you need the formula:moles = m/Mr where m is the mass in grams and Mr is the molar mass wh...

MC
Answered by Matthew C. Chemistry tutor
5583 Views

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