CHEM 1211 Lab Manual-Revised 05/2017 H (acidity or basicity) of an (1 pt.) (1 pt
ID: 1088827 • Letter: C
Question
CHEM 1211 Lab Manual-Revised 05/2017 H (acidity or basicity) of an (1 pt.) (1 pt.) (1 pt.) Procedure B: Identification of a gas by its effect on the p aqueous solution Color of acidic solution with indicators Color of neutral solution with indicators Color of basic solution with indicators All observations of the effect of breath on the neutral solution: What gas in your expelled breath produced the change in pH of the solution? The product of the reaction of the gas with water is carbonic acid. Explain how your observations of the three flasks support the formation of acid in solution? Give a balanced equation for the formation of carbonic acid from the reactants, including the physical states of each compound. Reaction 2: Procedure C: Reaction of calcium carbonate with aqueous hydrochloric acid Observations: The process you observed was actually the result of two sub-reactions. Initiall hydrochloric acid and the calcium carbonate react to form calcium chloride and carbon observed gas (re reaction and compound. . The second reaction is the decomposition of carbonic acid to form the verse of Reaction 2). Write balanced chemical equations for each sub- Be sure to include the physical states of each ic acid. The second reaction is the decomposition of the overall reaction.Explanation / Answer
Univeral indicator is taken for answer
color of acidic solution with indicator = RED
color of basic solution with indicator= DARK PURPLE
color of neutral solution with indicator = GREEN
Carbon dioxide gas in breath changes ph.
Balance chemcal equation
CO2 (g) + H2O (l) -------------------------> H2CO3 (aq)