Ok, we got this other question

Use the following information to design the experiment and so complete the questions applicable to it

a. u are given a substance that you know is a soluble chloride (to be refered to as X.Cl.)

b. X is a group 1 cation

Perform a first hand investigation to measure and identify the mass ratios of metal to non metals in a compund and calculate the empirical formula

 

 

Anyone got an idea to a procedure? ... i hope i ain't asking to much, thanks

what sort of chemistry have you been doing recently? that should provide a clue.

 

you are probably looking for an insoluble product containing chloride ions

 

dont worry if you dont get a gold medal, second place will do.

this is for high school chemistry, we have just finished studying the moles

 

would u think electrolysis would be a good idea, as chlorides are soluble in water?

no i have been slightly crpytic in the reply

 

silver nitrate is the answer

well if it`s a chloride of a group 1 metal then the ratio will be 1:1

you know that chlorine has a mass of 35.5 per mole, a little simple maths using the volume and weight of the mystery sample will give a remainder, if it`s 7 it`s Li, 11 it`s Na, 19 it`s K, 37 it`s Rb and so on down the list.

 

failing that do a flame test and identify the color (but that`s cheating)

no i have been slightly crpytic in the reply

 

silver nitrate is the answer

 

u serious? How can u

 

i already handed my assignment up..i used electrolysis

I think he`s eluding to the fact that silver nitrate will create a near isoluble precipitate of silver chloride when in contact with.

 

it`s commonly used as a detection method for Chlorine ions as the white precipitate is quite unmistakable, how he`s going to apply it to your question I`m waiting to learn also. since the Chloride part wasn`t a mystery and was stated quite clearly as containing X.Cl.

 

maybe he`s thinking about weighing the silver chloride and then subtracting that from the remaining X.Nitrate?

ahhh... electrolysis > other crappy silver nitrate thingy

 

cause electrolysis is used in industry to actually seperate chloride.