HI Lecture Notes - Lecture 1: Baking Powder, Magnesium Chloride, Litmus

• School: Chettinad Academy of Research and Education - CARE
• Department: Architecture
• Course: HI
• Professor: All

Document Summary

The aqueous solution of an acid conducts electricity due to the presence of charged particles called ions in it. Dry hcl gas does not give h+ ions and therefore does not change the colour of dry litmus paper. When a given amount of an acid is added to water, there is a fixed number of hydronium ions per volume of the solution. On dilution, the number of hydronium ions per volume decreases and concentration decreases. But these are far less in number than oh ions that is responsible for their basic nature. Write an equation to show the reaction between plaster of paris and water. Answer: (a) zinc + dilute sulphuric acid zinc sulphate + hydrogen. Zn (s) + h2so4 (aq) znso4 (aq) + h2 (g) (b) magnesium ribbon + dil. Mg (s) + 2 hcl (aq) mgcl2 (aq) + h2 (g) (c) aluminium powder + dil.