Login

Search the forums now!

Welcome, Guest. Please login or register.

September 20, 2025, 06:03:02 pm
Pages: 1 ... 9 10 [11]   Go Down

Author Topic: 2010 VCAA Chemistry U4 Suggested solutions  (Read 42717 times)  Share 

0 Members and 3 Guests are viewing this topic.

stonecold

  • Victorian
  • Great Wonder of ATAR Notes
  • *******
  • Posts: 5335
  • Respect: +255
  • School Grad Year: 2010
Re: 2010 VCAA Chemistry U4 Suggested solutions
« Reply #150 on: November 16, 2010, 10:15:37 pm »
0
Quote from: Shark 774 on November 16, 2010, 10:03:10 pm
Quote from: m@tty on November 11, 2010, 03:34:16 pm
Quote from: 10weid on November 11, 2010, 03:25:22 pm
also pretty sure 8 is A, dilution decreases ocncentration of all ions - just because hydronium ion conc decresases doesnt necessarily mean OH- increases...

The concentration oh is greater in the water, thus when it is added to the acidic solution the overall concentration of increases.

Also, Vanadium Oxide is fine for catalyst instead of Vanadium Pentoxide.

I am not sure what the right answer is, but I don't agree with your reasoning. The OH- is greater in the water but as it is added to the HCl there is now a greater total volume and not to mention some of the OH- from the water will react with H+.

Again agree with matty.

If H+ decreases, then OH- has to increase.
Logged
2011-13: BBiomed (Microbiology & Immunology Major) @ UniMelb


VCE 2009'10: English 46 | English Language 49 | Chemistry 50 | Biology 50 | Further Mathematics 48 | Mathematical Methods CAS 39
ATAR: 99.85

"Failure is not when one falls down but rather when one fails to get up" - unknown

ckg93

  • Victorian
  • Adventurer
  • *
  • Posts: 10
  • Respect: +1
Re: 2010 VCAA Chemistry U4 Suggested solutions
« Reply #151 on: November 18, 2010, 12:01:06 pm »
0
Quote from: D27RII on November 12, 2010, 04:32:49 pm
Hydrogen gas is not flammable, if u put down flammable u will get it wrong, it is combustible, DEFINITELY not flammable lol.

What about if we say it goes BOOM when around an open flame/ spark... I'm pretty sure the VCAA would not get bogged down in the definition difference between combustible and flammable...
Logged
2009: Maths Methods
2010: English; Specialist Maths; Accounting; Physics; Chemistry

If you couldn't tell; I like mid-years....
Pages: 1 ... 9 10 [11]   Go Up