Chemistry 1220 Study Guide 2
Chemistry 1220 Study Guide 2 Chem 1210
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This 7 page Study Guide was uploaded by Emily Notetaker on Sunday October 16, 2016. The Study Guide belongs to Chem 1210 at Ohio State University taught by Dr. Bartoszek-Loza in Summer 2016. Since its upload, it has received 194 views.
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Date Created: 10/16/16
Chemistry 1210 Midterm 2 Study Guide Chapter 4: Define: Strong electrolyte – Non-electrolyte – Weak electrolyte – Concentration – Name the 7 strong acids. Name the 8 weak bases. A lot of the chapter 4 material was covered in the last midterm, expect similar questions to those on the exam. Solid sodium oxalate (Na2C2O4, 134.0 g/mol) is dissolved in water and is then titrated with a 0.35 M potassium permanganate solution, KMnO4(aq). Write and equation and balance it. Then figure: Which of these titrations requires the most 0.35 M KMnO4(aq) to reach the equivalence point? a. 3.00 g of solid dissolved in 50 mL of water b. 4.00 g of solid dissolved in 200 mL of water c. 3.50 g of solid dissolved in 100 mL of water d. 1.50 g of solid dissolved in 50 mL of water Identify the redox reaction. a. K2CO 3aq) + 2HCl(aq) CO (g) 2 2KCl(aq) + H O(l) 2 b. 2KI(aq) + Fe(NO ) 3 3) 2KNO (aq)3+ 2Fe(NO ) (aq) 3 2 (g) 2 c. ZnCl 2aq) + 2NaOH Zn(OH) (s) +22NaCl(aq) d. 2HBr(aq) + Ca(OH) (aq) 2H O +CaBr (aq) 2 2 2 Consider the reaction that occurs when aqueous solutions of BaS(aq) and FeSO (aq) 4 are combined. In the net ionic equation, which of the following is a spectator ion? a. Fe2+ b. All of these ions are spectator ions 2- c. SO 4 d. There are no spectator ions e. S2- What is the oxidation number for chromium in each of these? a. H 2rO 4 b. K 2r 2 7 c. (NH 4 2rO 4 d. Cr 2 3 e. CrO 3 What happens when 0.10 M HCl(aq) and 0.10 M NaOH(aq) are combined? Then what happens when Cu(NO ) (aq)3 2 added to the final solution? What are the 6 soluble ionic compounds and their exceptions? What are the 4 insoluble ionic compounds and their exceptions? Chapter 5: Define: Heat – Work – Potential Energy – Kinetic Energy – Internal Energy – Isolated system – Closed system – Open system – Endothermic – Exothermic - What is the first law of thermodynamics? What is the enthalpy and the equation? What is the heat capacity of a substance? What is the difference between specific heat and heat capacity? Write the standard enthalpy of formation reactions for the following substance. In each case, identify the sum of the coefficients in the balanced equation. Ammonium nitrate Propane Iron (II) sulfate Sodium carbonate Calculate the enthalpy change for the reaction: FeO(s) + CO(g) Fe(s) + CO (g) 2 Given 2Fe(s) + 3CO (g2 Fe O (2) 3 3CO(g) ΔH = 28 kJ 3Fe 2 (3) + CO(g) 2Fe O (s3 4 CO (g) 2 ΔH = -47 kJ 3FeO(s) + CO (g)2 Fe O (3) 4 CO(g) ΔH = 22 kJ Then calculate the enthalpy change from standard enthalpy of formation data: ΔH f°O(s) = -271.9 kJ/mol ΔH f°(g) = -110.5 kJ/mol ΔH f° (g)2= -393.5 kJ/mol The reaction FeO(s) + CO(g) Fe(s) + CO (g) tak2s place in a sealed container. It is stopped and the container holds 12 moles of CO (g) and 82moles of CO(g). How many moles of CO(g) were initially present? How much heat was involved getting to this point? Two substances are added to a closed container outfitted with a piston. A chemical reaction takes place, the piston moves inward, and the container feels cold. What happens to interal energy of the substances inside the container? Compare the energies of CO (s) at -50 degrees C and CO (g) at 10 degrees C. 2 2 PE? KE? Describe the energy of a chemical bond? Draw a reaction progress diagram when ammonium nitrate is mixed with water, and the container feels cold. Chapter 6: List the elements of the electromagnetic spectrum (infrared, UV, gamma, x-rays, radio, microwave, visible) in terms of increasing energy, frequency, and wavelength. Describe each model and if it is a good representation of the atom. Bohr’s Model: De Broglie’s Model: Tomson’s Model: Solar system model: Dalton’s Billiard Ball model: What is amplitude, frequency, and wavelength? How do they relate? What is the Heisenberg’s Uncertainty Principle? Which aspect of an electron in the atom is described in terms of probability? What are the quantum number for an electron? What are the rules? What does each quantum number represent? To observe a line spectrum (monochromatic/polychromatic) light (emitted from/transmitted through a tube filled with hydrogen enters a spectroscope where it is (refracted/diffracted). Select the correct terms. A standing wave is established between two anchor points that are 12 cm apart. Including the anchor points, there are 5 total of nodes. What is the wavelength of the standing wave?
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