which has the most acid coke or vinegar
I don't have any numbers to support my thinking but I know MOST brands of vinegar are 5% acetic acid (although I saw one recently at 4%). I think coke is about 0.05 M but I don't KNOW that. In addition, k1 for H2CO3 is much less than acetic acid (by a factor of about 100). Therefore, I think vinegar is a stronger acid (by a fair margin) than coke. I think I know of a site that lists pH of foods. If I can find it I will post it following this post.
I found two sites. The first one lists vinegar and the second list coke products.http://vm.cfsan.fda.gov/~mow/app3a.html
http://www.madsci.org/posts/archives/oct98/909181221.Ch.r.html
To determine which has the most acidity between coke and vinegar, we need to consider the concentration of acid present in each substance.
Most brands of vinegar typically contain 5% acetic acid, although some may have a concentration of 4%. On the other hand, the acidity of coke can vary, but it is typically around 0.05 M. It's worth noting that the acidity of coke is primarily due to carbonic acid (H2CO3) formed by the dissolution of carbon dioxide in water.
Based on the concentration of acid, it can be inferred that vinegar is a stronger acid than coke. Additionally, the dissociation constant (k1) for acetic acid is higher than that of carbonic acid by a factor of about 100, indicating that acetic acid is a more potent acid.
To find specific values or pH levels for various food products, including vinegar and coke, you can refer to food databases or websites that provide such information. The two sites you mentioned, http://vm.cfsan.fda.gov/~mow/app3a.html and http://www.madsci.org/posts/archives/oct98/909181221.Ch.r.html, can be used to find pH values for different food products, including vinegar and coke.