hsc assessment one

SalButtsworth · 7 Nov 2009, 10:33 PM

You can hide this advertisement by registering.

i dunno if we all get the same assessment task but i have one for this subject. i have to try to find solubility of pure substances in ethanol (alcohol)
anyone got any ideas???

damianI · 8 Nov 2009, 12:51 PM

you have to control temperature because substances have different solubilities at different temperatures so that is a variable

damianI · 8 Nov 2009, 12:56 PM

also use 100mL of ethanol and use saturated or excess solute, filter out the undissolved mass, measure this mass and deduct it from the original mass of solute placed into the ethanol. Then the solubility can be measured in g/100mL

SalButtsworth · 10 Nov 2009, 6:45 AM

haha thankyou that helps heaps.. wat sort of substances do u think i should use?? i was thinking becuase they have to be as close to pure as they can be that i will use bicarb soda, citric acid (lemon juice) and the blue crystals that u can buy at a hardware store lol im having a mind blank right now..

iMAN2 · 11 Nov 2009, 1:34 AM

use pure/distilled water (does it float, dissolve etc).

paint..not pure though.

blue crystals - copper sulfate?

btw is this experiment ur doing in a school lab or at home?

7 Nov 2009, 10:33 PM	#1 (permalink)
SalButtsworth New Member HSC: 2010 Gender: Female Join Date: Nov 2009 Posts: 7 Last Activity: 19 Nov 2009, 6:03 PM	hsc assessment one You can hide this advertisement by registering. i dunno if we all get the same assessment task but i have one for this subject. i have to try to find solubility of pure substances in ethanol (alcohol) anyone got any ideas???

8 Nov 2009, 12:51 PM	#2 (permalink)
damianI New Member HSC: 2009 Gender: Male Join Date: Jul 2009 Posts: 14 Last Activity: Yesterday, 8:47 PM	Re: hsc assessment one you have to control temperature because substances have different solubilities at different temperatures so that is a variable

8 Nov 2009, 12:56 PM	#3 (permalink)
damianI New Member HSC: 2009 Gender: Male Join Date: Jul 2009 Posts: 14 Last Activity: Yesterday, 8:47 PM	Re: hsc assessment one also use 100mL of ethanol and use saturated or excess solute, filter out the undissolved mass, measure this mass and deduct it from the original mass of solute placed into the ethanol. Then the solubility can be measured in g/100mL

10 Nov 2009, 6:45 AM	#4 (permalink)
SalButtsworth New Member HSC: 2010 Gender: Female Join Date: Nov 2009 Posts: 7 Last Activity: 19 Nov 2009, 6:03 PM	Re: hsc assessment one haha thankyou that helps heaps.. wat sort of substances do u think i should use?? i was thinking becuase they have to be as close to pure as they can be that i will use bicarb soda, citric acid (lemon juice) and the blue crystals that u can buy at a hardware store lol im having a mind blank right now.. Last edited by SalButtsworth; 10 Nov 2009 at 6:47 AM.

11 Nov 2009, 1:34 AM	#5 (permalink)
iMAN2 Executive Advisor HSC: 2009 Gender: Male Join Date: Mar 2007 Posts: 145 Last Activity: Today, 1:10 PM	Re: hsc assessment one use pure/distilled water (does it float, dissolve etc). paint..not pure though. blue crystals - copper sulfate? btw is this experiment ur doing in a school lab or at home? __________________ Offering tutoring for HSC, Preliminary and Junior year students in: -Chemistry (did this accelerated) -Physics -Advanced English -Philosophy Distinction Course -Year 7-10 Sciences Want a band 6? Want access to a huge array of resources? Need a tutor who is passionate? Contact me at EventusEducation@gmail.com or PM me for further details or any help. YOUR SUCCESS. MY PASSION.

Thread Tools
Show Printable Version Email this Page
Rate This Thread
Rate This Thread: