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Chemistry
A Level

what is entropy in terms of disorder?

In terms of chemistry- entropy refers to disorder, so basically things coming out of order. So a reaction involving chemical A moving from a solid to a gaseous state. This change in state of matter, from ...

Answered by Nimai D. Chemistry tutor
2332 Views

How to calculate acidic buffer solution pH, and how do they behave?

Example: Calculate the pH of a buffer solution which contains the weak monoprotic acid, propanoic acid (CH3CH2COOH), in concentration 0.1 moldm-3 and sodium propanoate in concentration 0.05 moldm-3. Ka of...

Answered by Kareem H. Chemistry tutor
19999 Views

State and explain the conditions for cis/trans isomerism and how this differs from E/Z isomerism.

cis/trans isomerism requires a double bond for restricted rotation about the bond, two different groups on each carbon of the double bond and at least one of the groups on each carbon of the double bond a...

Answered by Ele C. Chemistry tutor
11962 Views

Explain why potassium has a greater first ionisation energy than rubidium.

The outer electron of potassium is closer to its nucleus than the outer electron for rubidium, as it has a stronger attractive force between the electron and the potassium nucleus. The outer electron for ...

Answered by Arinjay J. Chemistry tutor
12409 Views

In terms of structure and bonding explain why the boiling point of bromine is different from that of magnesium

Bromine exists as a simple molecular structure- the Br2 molecules are held together using Van der Waals forces. Whereas Magnesium is a metal and is held together using metallic bonding. Metalic...

Answered by Mubeena A. Chemistry tutor
19374 Views

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