help on syllabus point

**freakstar87** · 12 Jun 2005, 1:14 PM

You can hide this advertisement by registering.

anyone here know how to do this dot point? i can't find alot of info based on this area

- Identify data, gather and process information from secondary spurces to identify examples of naturally occuring acids and bases and their chemical composition

thanks if you have any advice on doing this question

tennille · 12 Jun 2005, 1:36 PM

Naturally occurring acids include HCL, acetic acid (CH3COOH), citric acid, vitamin C (ascorbic acid). I'm not sure about bases. But put those into Google and you should get some info.

pseudobubble · 12 Jun 2005, 4:37 PM

http://science.uniserve.edu.au/schoo...m/acidbase.xls

I found it just a few weeks ago when I was doing that dot point ^^ It is from UniServe (it is a Sydney Unisversity thing), and here is the link to it if:

http://science.uniserve.edu.au/schoo...hem/index.html

You should bookmark this website =) It has a lot of valuable information for both the HSC and Preliminary courses.

I hope this helps =)

Dreamerish*~ · 12 Jun 2005, 4:48 PM

the acids you need to know are (i think):

acetic acid - CH₃COOH: systematic name is ethanoic acid, found in small amounts (approx. 4 - 5%) in vinegar. weak.

hydrochloric acid - HCL: also known as muric acid. found in the stomach as stomach acid. strong.

carbonic acid - H₂CO₃: found in soft drinks and acid rain. weak.

citric acid - C₆H₈O₇: systematic name is 1,2,3-tricarboxylic-2-hydroxypropane. found in citric fruits such as lemon and lime. weak.

sorry i don't have time to type bases because i'm loaded with math hw '-_-

pseudobubble · 12 Jun 2005, 4:53 PM

Maybe the bases in that excel file are a bit complicated, with the exception of ammonia.

What do you all think about carbonates?

Dreamerish*~ · 12 Jun 2005, 4:59 PM

Quote:

Originally Posted by pseudobubble

Maybe the bases in that excel file are a bit complicated, with the exception of ammonia.

What do you all think about carbonates?

what about carbonates?

pseudobubble · 12 Jun 2005, 5:16 PM

They are bases =p are they not?

Dreamerish*~ · 12 Jun 2005, 5:18 PM

Quote:

Originally Posted by pseudobubble

They are bases =p are they not?

lol yes they certainly are..

pseudobubble · 12 Jun 2005, 5:21 PM

We have more to add to our lists then ^^

Dreamerish*~ · 12 Jun 2005, 5:24 PM

Quote:

Originally Posted by pseudobubble

We have more to add to our lists then ^^

which bases are naturally occuring?

tennille · 12 Jun 2005, 5:29 PM

calcium carbonate (aka lime)- CaCO3- mineral

pseudobubble · 12 Jun 2005, 5:31 PM

Ammonia - volcanic gas, decaying organic matters
Carbonates - I am not sure since I just came up with it =p but I know calcium carbonate is limestone ^^ Sodium carbonate occurs as natural deposits too!

Templar · 12 Jun 2005, 5:35 PM

Also any soluble metallic oxides...

There aren't many naturally occuring bases, and they're all pretty weak compared with the acids.

LSP · 28 Jun 2005, 2:32 PM

These are some example i got for this dot point:
naturally occuring base-
- DeoxyInosine - present in a DNA template
- Alkaloids - complex multi-ring structures, nitrogen generally makes the compound basic and the compound exists in the plant as a salt

For the acid, enough info from everyone else

12 Jun 2005, 1:14 PM	#1 (permalink)
freakstar87 wow HSC: 2005 Gender: Female Location: i forgot Join Date: Aug 2003 Posts: 583 Last Activity: 10 Jul 2009, 8:49 PM	help on syllabus point You can hide this advertisement by registering. anyone here know how to do this dot point? i can't find alot of info based on this area - Identify data, gather and process information from secondary spurces to identify examples of naturally occuring acids and bases and their chemical composition thanks if you have any advice on doing this question

12 Jun 2005, 4:48 PM	#4 (permalink)
Dreamerish*~ Love Addict - Nakashima HSC: 2005 Gender: Female Join Date: Jan 2005 Posts: 3,738 Last Activity: 21 Jun 2006, 12:36 PM	the acids you need to know are (i think): acetic acid - CH₃COOH: systematic name is ethanoic acid, found in small amounts (approx. 4 - 5%) in vinegar. weak. hydrochloric acid - HCL: also known as muric acid. found in the stomach as stomach acid. strong. carbonic acid - H₂CO₃: found in soft drinks and acid rain. weak. citric acid - C₆H₈O₇: systematic name is 1,2,3-tricarboxylic-2-hydroxypropane. found in citric fruits such as lemon and lime. weak. sorry i don't have time to type bases because i'm loaded with math hw '-_- __________________ uai :: 98.20 \| b. pharmacy @ usyd \| no more chemistry students til '07

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

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
syllabus dot point..	free-bird	Financial Planning & Management	3	22 Oct 2007 12:00 AM
help with syllabus point!!!!	poopoohead	The Acidic Environment	6	8 Feb 2007 8:07 PM
Syllabus dot point	Lois_87	Business Studies	2	6 Oct 2005 10:28 PM
syllabus dot-point	_melissa_	Elective: Shipwrecks, Corrosion and Conservations	1	17 Jul 2005 7:53 PM

12 Jun 2005, 1:36 PM	#2 (permalink)
tennille ... HSC: 2004 Gender: Female Location: Sydney Join Date: Nov 2003 Posts: 3,487 Last Activity: 29 Jun 2009, 5:10 PM	Naturally occurring acids include HCL, acetic acid (CH3COOH), citric acid, vitamin C (ascorbic acid). I'm not sure about bases. But put those into Google and you should get some info.

12 Jun 2005, 5:29 PM	#11 (permalink)
tennille ... HSC: 2004 Gender: Female Location: Sydney Join Date: Nov 2003 Posts: 3,487 Last Activity: 29 Jun 2009, 5:10 PM	calcium carbonate (aka lime)- CaCO3- mineral

12 Jun 2005, 5:35 PM	#13 (permalink)
Templar P vs NP HSC: 2004 Gender: Male Join Date: Aug 2004 Posts: 1,994 Last Activity: 10 Feb 2010, 9:36 PM	Also any soluble metallic oxides... There aren't many naturally occuring bases, and they're all pretty weak compared with the acids.

28 Jun 2005, 2:32 PM	#14 (permalink)
LSP Assistant Member HSC: 2004 Gender: Female Location: Sydney Join Date: Aug 2004 Posts: 63 Last Activity: 18 Jul 2005, 1:19 PM	These are some example i got for this dot point: naturally occuring base- - DeoxyInosine - present in a DNA template - Alkaloids - complex multi-ring structures, nitrogen generally makes the compound basic and the compound exists in the plant as a salt For the acid, enough info from everyone else