Biology; Chemistry; Physics: Post your doubts here!

[a.abid]

The mass of one mole of a chloride formed by a metal Y is 74.5 g.​

What is the formula of the chloride?​

A Y3Cl B Y2Cl C YCl D YCl 2​

C....cuz Chlorine=74.5-35.5=39 which is potassium

 

[daredevil]

hydrogenation needs 180c and nickel
hydration needs 300c and phosphoric acid
cracking needs al203 and high temperature(different temp for different products) or porcelean chips or ceramics...
acid making needs alcohol and potassium dichromate or any other oxidizing agent.
esterification needs conc h2s04

addition to ur post:
hydration also needs 60atm pressure.

 

[khizer shahab]

hydrogenation needs 180c and nickel
hydration needs 300c and phosphoric acid
cracking needs al203 and high temperature(different temp for different products) or porcelean chips or ceramics...
acid making needs alcohol and potassium dichromate or any other oxidizing agent.
esterification needs conc h2s04

in hydrogenation IRON is used as catalyst !!

 

[MustafaMotani]

in hydrogenation IRON is used as catalyst !!

LOL nickel is correct bhai

 

[rabiafarooq101]

addition to ur post:
hydration also needs 60atm pressure.

7oatm

 

[kitecrystal]

C....cuz Chlorine=74.5-35.5=39 which is potassium

perfect

 

[Translucent231]

LOL nickel is correct bhai

aray dada Iron is in the making of ammonia

 

[a.abid]

in hydrogenation IRON is used as catalyst !!

nickel is used in hydrogenation...

 

[kitecrystal]

C its potassium chloride becasue since one mole has mass in decimals it means there is only 1 atom of Cl which is 35.5 u subtract that ... 74.5- 35.5 = 39 which is Potassium which has valency of +1

thanks a lot

 

[MustafaMotani]

aray dada Iron is in the making of ammonia

so dats wat i am saying

 

[khizer shahab]

LOL nickel is correct bhai

then I would have wrongly written down in copy !! thanks for correction !!

 

[daredevil]

7oatm

it says 60 in ma book

 

[Translucent231]

so dats wat i am saying

haha quoted the wrong guy

 

[MustafaMotani]

then I would have wrongly written down in copy !! thanks for correction !!

WelCUm ..

 

[rabiafarooq101]

it says 60 in ma book

70 in mine plus told by 2 chem sirs

 

[khizer shahab]

70 in mine plus told by 2 chem sirs

both correct !! it differ from book to book , mind to mind !!

 

[MustafaMotani]

it says 60 in ma book

Its 70 correct it...

 

[asd]

70 in mine plus told by 2 chem sirs

Both are acceptable lol. anyway, there is a range of answers for conditions in marking scheme.
daredevil

 

[rabiafarooq101]

both correct !! it differ from book to book , mind to mind !!

well if I cum by any quest regarding this in any pastpaper I wud see from markscheme and post it here

 

[daredevil]

thnks !!

Its 70 correct it...

*phew*