Introductory Chemistry: A Foundation
9th Edition
ISBN: 9781337399425
Author: Steven S. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Chapter 6, Problem 24QAP
Solid zinc is added to an aqueous solution containing dissolved hydrogen chloride to produce gaseous hydrogen that hubbies out of the solution and zinc chloride that remains dissolved in the water. Write the unbalanced chemical equation for this process.
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There are two instances where waste streams from reactions would need to be processedcan you identify them?
Now, write the balanced equation for the reaction you just watched in question 4 (same video embedded below).
Hint: The reactants are solid copper and aqueous silver nitrate. There are two products in this reactions - one is a solid and one is an aqueous solution of an ionic compound. Copper becomes a +2 ion.
Please make sure to use phases for each substance and parentheses (when needed) and subscripts.
https://www.youtube.com/watch?v=P5QlfMRvvF8&feature=emb_title
(1 min 9 sec video)
Sample: Saline 0.900% (m/v), in sodium chloride (NaCl). Data: M.A. (g/mol): Na = 22.9898; K = 39.0983; Cr=51.9961; Ag = 107.8682; Cl = 35.453; N=14.0067; O = 15.9994. Material available in the laboratory's warehouse: Reagents: distilled water; standardized solution of silver nitrate (AgNO₃), at a concentration of 0.09980 mols/L; Potassium chromate solution (K₂CrO₄) 1%; ammoniacal ferric alum solution [Fe(NH₄)(SO₄)₂] and; nitrobenzene (or cooking oil, alternatively); 0.1000 mols/L potassium thiocyanate (KSCN) standard solution. Glassware: beakers of all sizes available on the market; 50, 100, 150, 200 and 250 ml Erlenmeyers; 10.00 and 25.00 mL volumetric pipettes; 15.00 mL burette; 30.00, 50.00 and 100.00 mL volumetric flasks
Calculate the molarity of saline, in terms of the NaCl concentration (concentration in mols/L).
(a) 0.900 mols/L
(b) 5.84 mols/L
(c) 0.154 mols/L
(d) 0.0154 mols/L
Chapter 6 Solutions
Introductory Chemistry: A Foundation
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