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Explain the trend in boiling points between HF, HCl and HBr.

There are two themes in this answer. The first being the hydrogen bonding potential of HF and the second being the difference in size of the of the halide ions. Fluorine is one of three elements that can for...
TS
Answered by Thomas S. • Chemistry tutor
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What is cracking and how is it done?

Cracking of CRUDE OIL is the breakdown of long-chain hydrocarbons (produced from fractional distillation) to shorter-chain hydrocarbons, which are more economically useful. Long chain hydrocarbons are vapour...
MK
Answered by Maciek K. • Chemistry tutor
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A) What assumptions are made about ideal gases. B) if 14g of an ideal gas is added to a 4 dm3 container at 210Kpa pressure and a temperature of 40oc how many moles were added and suggest the identity of the gas.

The two main assumptions that are made about ideal gases are: firstly, that the volume of the gas particles themselves is negligible or zero. So, the entire volume of the container is available. Secondly tha...
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Answered by Zach M. • Chemistry tutor
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In order to find the [H+] ion content of H2SO4 (Sulphuric Acid), why must you divide by two after using the formula for pH calculation?

This is because H2S04 is a diprotic acid. If we look at how the acid dissiociates, we can see that: H 2 SO 4 ----------> 2H + +SO 4 2- Since there are two H + ions dissociating, using the formula for pH w...
JJ
Answered by Jamil J. • Chemistry tutor
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Why are the properties of diamond and graphite different despite both being made of the same constituent element, carbon.

Steps to address questions Structure Bonds Free electrons Diamond is very hard and is a poor conductor of electricity as each carbon atom is strongly bonded to 4 other carbon elements by strong covalent bond...
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Answered by Tania F. • Chemistry tutor
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