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Calculate pH of 0.1M NaOH

pH=14-pOHpOH=-log([OH(-)])NaOH-> Na(+)+OH(-)[NaOH]=[OH(-)]=0.1MpOH=-log(0.1)=1pH=14-1=13
LK
Answered by Laura K. • Chemistry tutor
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Write an expression and units for equilibrium constant for this reaction: 2SO2(g)+O2(g)<-->2SO3(g)

Kc=[SO3]^2/([O2][SO2]^2)Units M-molar concentration mol/lM^2/(M*M^2)=1/M=l/mol
LK
Answered by Laura K. • Chemistry tutor
12469 Views

Describe how you test for an aldehyde or ketone and distinguish between the two.

To test for an aldehyde or ketone you would use 2,4-dinitrophenylhydrazine (2,4-DNP). 2,4-DNP mixed with methanol and sulphuric acid is knows as Brady's reagent. If a yellow/orange precipitate is formed when...
SJ
Answered by Shivali J. • Chemistry tutor
38815 Views

A compound, HOCH2CH2CH2CH2COCl, reacts with itself to give a new compound. Give the IUPAC name for the starting compound, draw the mechanism for the formation of the new compound and give the prominant feature of the IR spectrum of the new compound.

This compound is highly unstable, and it's IUPAC name would be 5-hydroxypentyl chloride . The &quot;hydroxy&quot; part is from the OH alcohol group, &quot;pent&quot; from the number of carbons in the chain, ...
DH
Answered by David H. • Chemistry tutor
8137 Views

What is optical isomerism and how can you distinguish between optical isomers?

A molecule will exhibit optical isomerism if it contains a chiral centre / an asymmetric carbon atom - in other words, if it contains a carbon atom with 4 different groups attached. Due to this property, the...
BS
Answered by Beth S. • Chemistry tutor
47445 Views