Subject: Making solutions with known pH levels

I want to create different acid and base solutions using vinegar and baking
soda.  Are there measurements that will help me create solutions with known pH
levels?

Re: Making solutions with known pH levels

Hi David - 

Can you please tell us a little more about what you're trying to do?  
Vinegar and baking soda are probably not ideal to combine together for 
different pH levels.  Please go to our MadSci archives via 
http://www.madsci.org/circumnav/index.html for more information about 
vinegar and baking soda reactions.

Questions can be resubmitted online via http://www.madsci.org/submit.html
Thanks!

	Kieran Kelly, Moderator MadSci Network

Follow-up 5/27/2005:

It is a science fair project on the effects of varying pH levels on 
plant growth.  I am not mixing baking soda and vinegar together in 
the same solution, but want to create concentrations of acid and 
base solutions and want to know what the pH levels are likely to be.

For example: I have white vinegar that is listed on the bottle as a 
"diluted with water to a 5% acid" solution.  If I mixed 50 ml of 
the vinegar with tap water to make 500ml, is there and formula 
that can tell me what the approximate pH of my mixture will be?  
Same type of thing for taking 50ml of baking soda and mixing it 
with enough water to make 500ml of solution.

Thanks for you prompt reply, the science fair is June 9th and my 
parents are getting nervous.

David

Re: Making solutions with known pH levels