Jump to content
Sign in to follow this  
maskman`

question by cambridge please

Recommended Posts

18 The following two experiments are carried out with anhydrous potassium chloride and
observations X and Y are made at the end of each experiment.
Concentrated sulfuric acid is added to the potassium chloride and the fumes produced are
bubbled into aqueous potassium iodide solution - observation X.
The potassium chloride is dissolved in aqueous ammonia and this is then added to aqueous
silver nitrate - observation Y.
What are the observations X and Y?
X Y
A brown solution colourless solution
B brown solution white precipitate
C colourless solution colourless solution
D colourless solution white precipitate

 

please correct me if i am wrong

by anydrous it means that it doesnt contain any water \

kCL+ h2so4 = k2so4 +2hcl

and i dont know what happens when kcl reacts with silver nitrate and ammonia

i dont understand the color thing yet. does it have a logic in it or is it just something that needs to be learned by heart?



21 An organic compound J reacts with sodium to produce an organic ion with a charge of –3.
J reacts with NaOH(aq) to produce an organic ion with a charge of –1.
What could be the structural formula of J?
A HO2CCH(OH)CH2CO2H
B HO2CCH(OH)CH2CHO
C HOCH2CH(OH)CH2CO2H
D HOCH2COCH2CHO

is there even such i thing like organic ion?

like i know that organic compounds can get - charge coo~ could be one group with such a charge. all in all i would guess that alchols and carboxylics acids can react with sodium and therefore the one with 3 groups carboxylic sodium and alcohol are responsible for this ions to be formed.

please correct me if i am wrong

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.