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http://www.rewardinglearning.org.uk/common/includes/microsite_doc_link.aspx?docid=14322-1Yes, I got the same answers too. Where did you get these questions from?
Option 2: Halogenoalkanes have less H atoms because they are replaced by halogens, so they form hydrogen bonds less readily.
Option 3: Alkanes cannot undergo addition polymerisation.
Therefore, they are both wrong.
Hey, I don't think halogenoalkanes even make Hydrogen bonds :/ there is no H attached to Fluorine, Nitrogen Or Oxygen.. ?
can somebody help me with M/J 08 Q 6 please
A student mixed 25.0 cm3 of 0.350 mol dm–3 sodium hydroxide solution with 25.0 cm3 of 0.350 mol dm–3 hydrochloric acid. The temperature rose by 2.50 C. Assume that no heat was lost to the surroundings.
The final mixture had a specific heat capacity of 4.20 J cm–3K–1.
What is the molar enthalpy change for the reaction?
A –150 kJ mol–1
B –60.0 kJ mol–1
C –30.0 kJ mol–1
D –0.150 kJ mol–1
A student mixed 25.0 cm3 of 0.350 mol dm–3 sodium hydroxide solution with 25.0 cm3 of 0.350 mol dm–3 hydrochloric acid. The temperature rose by 2.50 C. Assume that no heat was lost to the surroundings.
The final mixture had a specific heat capacity of 4.20 J cm–3K–1.
What is the molar enthalpy change for the reaction?
A –150 kJ mol–1
B –60.0 kJ mol–1
C –30.0 kJ mol–1
D –0.150 kJ mol–1
Q=VxCxdeltaT
total volume is 25+25 = 50 cm3
= 50 x 4.3 x (2.5)
=525
now we shud find enthalpy change fore one mole
number of moles = vol. x conc.
25/1000 x 0.35 = 8.75x10^-3
525 Joules was for 8.75x10^-3 moles
525 J = 8.75x10^-3 moles
? = 1 mole
525/(8.75x10^-3) = 60000 Joules/mole
i hope u got it
In one of the papers, I remember there being a table asking with which each alcohol and carboxyllic acid reacts with;Option 3 is wrong because it could either be an alcohol or a carboxylic acid. There is no observation which confirms either of these, so we cannot assume that it is an alcohol definitely.
In one of the papers, I remember there being a table asking with which each alcohol and carboxyllic acid reacts with;
and there was i think Na metal and NaHCO3 and i think that it said that the Na metal doesn't react with carboxyllic acid??
So I'm confused on which of the Na metal or compounds react with what respectively (OH and COOH groups)
So could you please summarize on which ones react with which?
http://maxpapers.com/wp-content/uploads/2012/11/9701_w14_qp_12.pdf
Can someone tell me how to find the answer for Q6 ? :/
A is the answer
is it like we see if the equation is balancing wid each hydrocarbon ? xP
in that case its only A i think.
Thanks alotYes, the question is on balancing reactions. Option A is the only hydrocarbon that can balance the reaction.
Yes:http://maxpapers.com/wp-content/uploads/2012/11/9701_w14_qp_12.pdf
Can someone tell me how to find the answer for Q6 ? :/
A is the answer
is it like we see if the equation is balancing wid each hydrocarbon ? xP
in that case its only A i think.
Alright! Thanks!Both alcohols and carboxylic acids react with sodium metal. Follow these links for further information:
Alcohols: http://tinyurl.com/bawcd94
Carboxylic acid: http://tinyurl.com/5r72ms
However, only carboxylic acids react with sodium carbonate in a neutralisation reaction, not alcohols. The above link has further information about this. Hope this helps!
Alright! Thanks!
And which of the two react with NaOH?
Does an ester react with HCN? If yes then please can you give an example with structural or displayed formula?
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