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i didnt get you question? is it p4 and p5?Increasing the iodide concentration would increase the voltage or decrease ?
increasing the concentration of iodide half cell connected to hydrogen would it increase the Ecell or decrease iti didnt get you question?
View attachment 23968
Increasing the iodide concentration would increase the voltage or decrease ?
View attachment 23968
Increasing the iodide concentration would increase the voltage or decrease ?
more positive??? why the equilibrium position will shift to the left which means the value will be less positive so it will decreaseThe position of an equilibrium is affected by change in concentration pressure etc .Redox equilibrium are da same.
thereforeif you increase the iodide concentration :-
- According to Le Chatelier , the equilibrium will move to oppose the change
- This means that it will try to reduce the concentration of iodide --> by increasing con of ions
- making voltage value more positive.
i say it will decrease the voltage because the equilibrium position will shift to the left.View attachment 23968
Increasing the iodide concentration would increase the voltage or decrease ?
i didnt get you question? is it p4 and p5?
what year??oct nov 43 p4 q3bi
haha well i progressed to the future,its oct nov 12 43what year??
haha well i progressed to the future,its oct nov 12 43
I am sure that question will in oct/nov 43!
i changed my initial answer. Is it clearer now ?more positive??? why the equilibrium position will shift to the left which means the value will be less positive so it will decrease
yeah it is much more clearer now!i changed my initial answer. Is it clearer now ?
yeah it is much more clearer now!
oct nov 43 p4 q3bi
Jazak'Allahum Khairan!!#9) idk
#21) organic compounds that react with sodium are either carbonal acids or alcohols ... organic ion with a charge of -3 means that there are 3 charged group or in other words three groups in the compound that could react , j reacts with NaOH to give a compound with charge -1 meaning that 2 of the charged groups will react the other wont .. thus it should have 2 acid groups and 1 alcohol group which wont react with NaOH answer=C
#26) compounds that could be oxidised by acidified dichromate are alcohols,ketones & aldehydes .. but then only aldehydes give a positive result with tollen's so the compounds should contain both alcohol aldehyde .. the only answer which works is C
#28) the graph shows a reaction that is done in 2 steps & is exothermic the only one which fits is B which is SN2 reaction
question 5 part iii.http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s10_qp_41.pdf
Question #5
(a) Part (iii)
and
(b) Part (iv)
for part b (iv)http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s10_qp_41.pdf
Question #5
(a) Part (iii)
and
(b) Part (iv)
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