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Why at room temperature is H2O a liquid, but H2S is a gas?

This question is basically just asking you why water has a higher boiling point that H 2 S. So you need to ask yourself what is the factor which means water has a higher boiling point? If you remember back t...
MK
Answered by Melissa K. • Chemistry tutor
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NaOH is a strong base. An aqueous solution is made containing 0.300mol.dm^-3 of NaOH at room temperature. Calculate the pH of this solution.

Concentration of NaOH=Concentration of OH- ions (NaOH is a strong base) Kw=1x10^-14 (at room temperature/25 degrees) using Kw=[H+][OH-] We can figure out the [H+] [H+]=Kw/[OH-] [H+]=(1x10^-14) / (0.300) Now ...
NK
Answered by Nadine K. • Chemistry tutor
17864 Views

What is an optical isomerism?

Optical isomerism is a type of stereoisomerism which includes a chiral carbon. This means the pair of molecules have the same structural formula but the four different groups around the carbon atom are arran...
NK
Answered by Nadine K. • Chemistry tutor
4077 Views

How will the position of equilibrium shift for an endothermic reaction when heated?

The position of equilibrium will shift to the right, favouring the forward reaction, to oppose the increase in temperature. Endothermic reactions absorb heat and therefore if the endothermic reaction is more...
RF
Answered by Rowan F. • Chemistry tutor
10939 Views

Explain the trend in ionisation energy down group 2? (3)

• down group 2 the number of protons increases therefore the nuclear charge increases (protons are found in the nucelus and have a +1 charge) • the number of shielding electrons increases ( each member down ...
FJ
Answered by Flora J. • Chemistry tutor
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