What are the pH readings of the following liquids: Coca-Cola, vinegar, ammonia-based cleaner, and Drano?

Well, since both Coca-Cola and vinegar are acidic solutions they would both fall about 2 on the pH Scale. Ammonia is alkaline and falls at around 11, and Drano, being formulated from sodium hydroxide would be tipping pH 13.

Here's a good site for pH information.

http://www.lenntech.com/pH-and-alkalinity.htm

Coca-Cola® products range in pH from 2.5 - 4.2. Coca-Cola Classic® is the most acidic at 2.5.

www.madsci.org/posts/archives/oct98/909181221.Ch.r.html

Liquid Drano2, pH = 13-14
Vinegar 3-4
Ammonia 12-13


http://w3.ric.edu/faculty/PSCI103/acids_bases/acid_base_notes.pdf

pH of Familiar Products/Sample Data Table
0
1
2
3 Vinegar, Sprite 2, Orange
4 Vinyl cleaner, Teacher's saliva, Orange
5 Fluoriguard2 anti-cavity rinse, Cepastat2 mouth spray, stdt saliva
6 Nail polish remover, Student saliva, shampoo
7 Liquid detergent, Skin cleanser
8 Tap water
9
10 Window cleaner
11 Dow2 bathroom cleaner
12 Dishwashing detergent
13
14

https://www.khanacademy.org/science/biology/water-acids-and-bases/acids-bases-and-ph/a/acids-bases-ph-and-bufffers

You guys are awesome.