FIG. 7.
(a) Mixing of acid and acid; (b) mixing of acid and base; (c) mixing of acid and water; (d) plots of gray values of mixing in each case; and (e) change in pH compared with commercially available pH strips.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.