Biology; Chemistry; Physics: Post your doubts here!

[Spidey21]

 

[daredevil]

heyy need help in the question 28 from 5070_s10_qp_12. please explain it too.
sorry for not posting the link bcuz i cant open the paper ryt now .... the connection is too darn slow!! -__-

 

[snoonono]

BEST chemistry notes and revision for chemistry pp3 coming up soon

 

[daredevil]

??

 

[Spidey21]

??

 

[snoonono]

we have chemistry ppr 3 after physics ppr 6

 

[multixamza01]

heyy need help in the question 28 from 5070_s10_qp_12. please explain it too.
sorry for not posting the link bcuz i cant open the paper ryt now .... the connection is too darn slow!! -__-

A ,The question is based on the reactivity series! The higher metal produces more yield than the lower metal

 

[daredevil]

A ,The question is based on the reactivity series! The higher metal produces more yield than the lower metal

yup that's the answer... but i got confused by the mixture. wat about that?? and how does the VOLUME of hydrogen produced differ?? reaction speed differ karey to smjh mein ata hai but volume to same nhi hona chahiye??

 

[Dukeofwin]

Could anyone possibly explain how the structure of Ester is constructed?
I got it wrong in ATP!
Dont want that to happen in P1 or P2

 

[snoonono]

Could anyone possibly explain how the structure of Ester is constructed?
I got it wrong in ATP!
Dont want that to happen in P1 or P2

when the acid and alcohol are added to each other, OH(hydorxide) and H(hydrogen) are taken to produce water, and the empty space will be the area of linkage between the leftovers of thealcohol and acid
the name is made by using the name of the alcohol as first name and acid as 2nd ( methanol alcohol + ethanoic acid --> methyl ethanoate )

 

[rabiafarooq101]

well in structure first u right acid then alcohol
example
CH3COOH and C2H5OH
ester formed would be
CH3COOC2H5
so write the acid part till COO then write the alcohol part minus the OH

 

[Dukeofwin]

when the acid and alcohol are added to each other, OH(hydorxide) and H(hydrogen) are taken to produce water, and the empty space will be the area of linkage between the leftovers of thealcohol and acid
the name is made by using the name of the alcohol as first name and acid as 2nd ( methanol alcohol + ethanoic acid --> methyl ethanoate )

Reply appreciated! But the WAY HOW THE STRUCTURE is constructed is needed!

 

[rabiafarooq101]

when the acid and alcohol are added to each other, OH(hydorxide) and H(hydrogen) are taken to produce water, and the empty space will be the area of linkage between the leftovers of thealcohol and acid
the name is made by using the name of the alcohol as first name and acid as 2nd ( methanol alcohol + ethanoic acid --> methyl ethanoate )

when you name it alcohol comes first

 

[rabiafarooq101]

Reply appreciated! But the WAY HOW THE STRUCTURE is constructed is needed!

I just explained it

 

[Dukeofwin]

well in structure first u right acid then alcohol
example
CH3COOH and C2H5OH
ester formed would be
CH3COOC2H5
so write the acid part till COO then write the alcohol part minus the OH

Thanks alot!

 

[rabiafarooq101]

Thanks alot!

you r welcome

 

[snoonono]

you r welcome

do u think u can explain chemical equations for me in a summary??? if u can ill be gratefullllll

 

[rabiafarooq101]

do u think u can explain chemical equations for me in a summary??? if u can ill be gratefullllll

what about them?

 

[snoonono]

what about them?

i want to know what equations i need to learn ( all of them ) please

 

[Dukeofwin]

Dont know why but XPF becomes more fun and addictive when the subject being discussed totally depends on General concepts(Physics) then MORE of a crammed subject(Chemistry).

I know most wont agree, but this is how I feel!