Laboratory Experiments B9 5. citic acid is often found in soft drinks. What is i
ID: 508049 • Letter: L
Question
Laboratory Experiments B9 5. citic acid is often found in soft drinks. What is its melting point? (Consult a handbook or the latemet.) Source: Handbook of Chemistry and Physics 6. p-Phenylenediamine (also named 1,4 diaminobenzene) dyes hair black. Is this substance a liquid or solid at room temperature? (Consult a handbook or the Internet.) Source: Handbook of Chemism and Physic 7. d vinegar is a 5% solution of acetic acid. Consult your textbook or Appendix E and give ine formula for acetic acid. 8. Consult the label on a can of Drano (not liquid) and write the chemical formula for the contents. (There are also small pieces of aluminum inside the can.) Copyright c 2012 Peanon Education, Inc.Explanation / Answer
5) The melting point of citric acid(C6H8O7) is 153 °C (307.4 °F, 426 K)
6) p-phenylenediamine which is used as a hair dye is a solid at room temperature.p-Phenylenediamine (PPD) is a solid at room temperature which has a slight aromatic odoor.. p-Phenylenediamine has a melting point of 142 °C (288 °F) and a boiling point of 274 °C (525 °F) (at 1,013 hPa). p-Phenylenediamine is a strong oxidizing agent.
7) The formula for ethanoic acid or acetic acid is CH3COOH.
8) The formula of Drano is principally sodium hydroxide, NaOH.
The reaction with the aluminum when water is added, produces hydrogen gas, like this:
6 NaOH + 2 Al 3 H2 + 2 Na3AlO3
But mostly there is a large excess of NaOH which presumably softens whatever is clogging your drain.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.