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Chemistry
A Level

25cm3 of a 0.10moldm-3 solution of sodium hydroxide reacts exactly in a titration with 15cm3 HCl. What is the concentration of the hydrochloric acid?

First, write a balanced chemical equation to determine the ratio of the reacting species: NaOH + HCl --> NaCl + H2O Sodium hydroxide and hydrochloric acid react in a 1:1 ratio,...

Answered by Elizabeth F. Chemistry tutor
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Compare the basic ability between ammonia, ethyl amine and phenyl amine.

In terms of order of increasing basic ability, it is as follows. Phenylamine < ammonia < ethyl amine.
The reason why phenyl amine (containing a benzene ring) is a weaker base than ammonia is be...

Answered by Chemistry tutor
15158 Views

Explain how nucleophilic substitution for a haloalkane actually occurs?

In a haloalkane, not all of the bonds are the same. We have to consider the fact that the halogen atom (for instance a bromine atom) is more electronegative than either carbon or hydrogen...

Answered by Naman K. Chemistry tutor
1699 Views

There are two methods of ionisation in a time of flight spectrometer, name and explain one of these methods in detail.

1).Electron impact ionisation- in this types of ionisation the sample is vaporised and injected into the mass spectrometer, then high energy electrons are fired at this sample from an electron gun. This k...

Answered by Chemistry tutor
3634 Views

Why does water have a higher boiling point than methane?

Methane has van der Waal's forces between molecules whereas water has hydrogen bonds between molecules. Hydrogen bonds are stronger than Van Der Waal's forces and therefore require more energy to be broke...

Answered by Chemistry tutor
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