General Chemistry

General Chemistry II

1. [7 points] The Group II ions are precipitated from acidic solution as sulfides. The precipitating reagent is 5 % thioacetamide and heating to 80 ° C produces a saturated solution of hydrogen sulfide with the concentration of H 2 S being 0.10 M. Calculate the molar concentration of HS - in a solution that is saturated with H 2 S and made acidic with concentrate

CHEM | 123 | General Chemistry II | exam | 1. [7 points] The Group II ion

1. [7 points] The following reaction is exothermic. 2 S(s) + 3 O 2 (g) → 2 SO 3 (g) What can we say about the spontaneity of this reaction? (a) spontaneous at all temperatures (b) spontaneous only at high temperatures (c) spontaneous only at low temperatures (d) non spontaneous at all temperatures (e) more information is need to predict if the reaction is sponta

CHEM | 123 | General Chemistry II | exam | 1. [7 points] The following re

1. What is the name given to the experimental apparatus for generating electricity through the use of a spontaneous reaction? a) electrolytic cell b) voltaic cell c) fuel cell d) standard cell e) anode cell 2. How many moles of electrons, n , are transferred in the reaction: 2 MnO 4 – (aq) + 16 H + (aq) + 10 Cl – (aq) → 2 Mn 2+ ( aq ) + 5 Cl 2 (g) + 8 H 2 O (l)? a. 2 b. 4 c. 5 d. 8 e. 10

CHEM | 123 | General Chemistry II | question bank | 1. What is the name given to t

1. Ethylene, C 2 H 4 , reacts with O 2 according to the following equation. What volume (L) of oxygen at STP is needed to react with 1.50 moles of C 2 H 4 ? C 2 H 4 (g) + 3 O 2 (g)   2 CO 2 (g) + 2 H 2 O(g) a) 4.50 b) 33.6 c) 101 d) 67.2 e) 89.6 2. The a value in the Van der Waals equation for HCl is than the a value for HF. The b value for HCl is than the b value for HF. a) larger, larger b) sma

CHEM | 122 | General Chemistry | exam | 1. Ethylene  C 2 H 4   reacts 

Chapter_12_Practice_Exam_Questions.docx-Points] Osmium (VIII) oxide, OsO 4

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