Chemistry: Post your doubts here!

[dumbledore.]

C

 

[dumbledore.]

A.
Why is 3 correct?

 

[Holmes]

9701/11/M/J/13

 

[Holmes]

9701/11/M/J/13

 

[Holmes]

9701/11/M/J/13

 

[Holmes]

9701/11/M/J/13

 

[Holmes]

PLZ explain!!

9701/13/M/J/12

 

[Holmes]

9701/13/M/J/12

 

[Holmes]

9701/13/M/J/12

 

[Holmes]

9701/12/M/J/12

 

[Holmes]

9701/12/M/J/12

 

[Holmes]

9701/13/O/N/13

 

[Holmes]

what does he want?

9701/13/O/N/13

 

[Holmes]

9701/11/M/J/14

 

[Holmes]

9701/11/M/J/14

 

[Holmes]

teach me this question thoroughly


9701/11/M/J/14

 

[Mstudent]

View attachment 62429
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Go to the data booklet, there you'll find 4. Standard Electrode potential ................................, there you'll find the equation for oxidation of Sn2+ to Sn4+ and reduction of KMNO4, just balance them so that the mole ratio of electrons is the same on both sides and then add the two equations, the electrons will cancel out to give you the equation, and then you know the rest!

 

[Mstudent]

teach me this question thoroughly

View attachment 62440
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what's the answer?

 

[darks]

Could you plz send it to me??? Your help will be greatly appreciated!

36. is A ONLY NaBr and NaI are oxidised when reacted with dil H2SO4, NaCL is too strong to be oxidised
37 is B I suppose? Find 'n' from PV=NRT to find the gas with the least moles!

hope that helps

Thanks!

March 2017 P1 for you all

 

[Holmes]

9701/11/O/N/13