Hello,
I have two bases (NAHCO3, NA2CO3) and an unknown monoprotic acid. I'm supposed to find the H+ concentration (so, pH, really).
How can I find the pH of this? I have Methyl Red available, but that's it.
What can I do to find the ph??!
2007-12-20 05:22:33 · 2 answers · asked by Sparky222B 2 in Science & Mathematics ➔ Chemistry
Edit: I'm actually trying to find molarity, I misread.
2007-12-20 05:30:38 · update #1
Methyl Red, also called C.I. Acid Red 2, is an indicator dye that turns red in acidic solutions. It is an azo dye, and is a dark red crystalline powder.
Methyl red is a pH indicator; it is red in pH under 4.4, yellow in pH over 6.2, and orange in between.
In microbiology, methyl red is used in the Methyl Red (MR) Test, used to identify bacteria producing stable acids by mechanisms of mixed acid fermentation of glucose. Cf. Voges-Proskauer (VP) test.
Murexide and methyl red are investigated as promising enhancers of sonochemical destruction of chlorinated hydrocarbon pollutants. [1]
Methyl red is classed by the IARC in group 3 - unclassified as to carcinogenic potential in humans.
2007-12-20 05:27:22 · answer #1 · answered by damian_emman 3 · 0⤊ 0⤋
One possibility is to make up 25 cm3 0.1M solution of Na2CO3, & put in a couple of drops MR & titrate. Calc: M1V1 = M2V2.
2007-12-20 13:41:13 · answer #2 · answered by BB 7 · 0⤊ 0⤋