1
vote
1answer
13 views
Delta H and MOL in Chemistry
"Delta H is the energy released per 1 mol."
Is that 1 mol of the reactant question mark and of WHICH reactant since there might be 2 with 2 different molar co-efficients.
3
votes
1answer
27 views
Chemistry calorimetry: sources of error
What could be the sources of error in a calorimetry experiment?
Thanks.
2
votes
1answer
10 views
Relationship between oxidation number of ability as an oxidant?
What's the relationship between oxidation number of ability as an oxidant? Do we need to know this?
2
votes
1answer
10 views
Is there anything more to the equilibrium law to Le Chatelier’s principle?
Is there anything more to the equilibrium law than Le Chatelier's principle?
1
vote
1answer
9 views
Chemistry question on CALORIMETRY
A student used a simple calorimeter to determine the heat of neutralisation of a strong acide with a strong base according to the reation:
H30+(aq) + OH-(aq) = 2H2O(L)
Calibration …
0
votes
0answers
9 views
Difference between the electrochemical cells
Apart from the 'external supply of power' part, is the difference between galvanic and electrolytic cells only that Cathode is negative in electrolytic cells and the cathode is pos …
1
vote
1answer
10 views
Is is correct to say the nuclear fission is unsustainable?
Is is correct to say the nuclear fission is unsustainable?
1
vote
0answers
47 views
Free VCE Chemistry tutorials
I am currently making tutorials on VCE Chemistry and posting them on YouTube. A little bit about me: Graduated VCE in 2004... obtained an ENTER in the high 90s (95+). I thought the …
2
votes
3answers
304 views
Chemistry - mid year result affect on overall RAW study score
Hey,
I've been wondering (since I haven't checked my mid year chemistry result yet) that if I get Bs in all of my chemistry sacs, yet get a a pretty bad score (like D) in my mid y …
1
vote
1answer
9 views
does the E*nought value given in the electrochemical series - relate to the forward or backward reaction?
does the E*nought value given in the electrochemical series - relate to the forward or backward reaction?
1
vote
1answer
9 views
Which is most likely to be correct about fuel cells?
I see why C is correct. Why is A NOT correct?
Which is most likely to be correct about fuel cells?
A.An external power supply is used to recharge the cell.
C. Chemical engergy is …
1
vote
2answers
26 views
What is the basicity constant and how is it calculated?
What is the basicity constant and how is it calculated?
1
vote
0answers
19 views
Misconceptions common in VCE chemistry
I recently heard that these were misconceptions common in VCE chemistry:
"...plus and minus signs assigned to the electrodes represent net electronic charges.."
and "notions that …
2
votes
1answer
18 views
Do any of you/did any of you complete exam papers from past study designs?
And is it worth it?
0
votes
0answers
14 views
How did the examiner get this part of the working?
How did the examiners reach all those conclusions? For example, How Cd2+ is more reactive than Co2+. The electrodes don't indicate anything! They just show a negative sign which is …
