1311 Practice Questions Oxidation and Reduction 4. What is the oxidation state (or number) of the elements in bold? +5-2 a) P2O5 1- b) H2O2 f)PO,² g) LiCoO2 c) NaH d) Cr20,2- e) S8 5. Which substance is being oxidized and which is being reduced? Mn (s) + Pb(NO3)2 (aq) → Mn(NO3)2 (aq) + Pb (s) Molarity 6. Calculate the molarity of a 175 mL sugar solution that was prepared with 0.15 mole of sugar. 7. A salt solution is to be added to a marine aquarium. Calculate the molarity of a salt solution that is prepared by adding water to 18.65 g of NaCl to give a final volume of 250.0 mL. Dilution 8. How much 2.0 M NaCl solution would you need to make 250 mL of 0.15 M NaCl solution? Solution Stoichiometry 9. How many grams of Ca(OH)2 are needed to neutralize 25.0 mL of 0.1 M HNO3? 10. What volume of 0.500 M HCl is needed to react completely with 0.100 mols of Pb(NO3)2? Molarity (M): #of moles VOl. 2HCI +PB(WO3)zCap-PbC12laghtZ O. 200 0. 500M 0.200 -0.400L 0.500

1311 Practice Questions Oxidation and Reduction 4. What is the oxidation state (or number) of the elements in bold? +5-2 a) P2O5 1- b) H2O2 f)PO,² g) LiCoO2 c) NaH d) Cr20,2- e) S8 5. Which substance is being oxidized and which is being reduced? Mn (s) + Pb(NO3)2 (aq) → Mn(NO3)2 (aq) + Pb (s) Molarity 6. Calculate the molarity of a 175 mL sugar solution that was prepared with 0.15 mole of sugar. 7. A salt solution is to be added to a marine aquarium. Calculate the molarity of a salt solution that is prepared by adding water to 18.65 g of NaCl to give a final volume of 250.0 mL. Dilution 8. How much 2.0 M NaCl solution would you need to make 250 mL of 0.15 M NaCl solution? Solution Stoichiometry 9. How many grams of Ca(OH)2 are needed to neutralize 25.0 mL of 0.1 M HNO3? 10. What volume of 0.500 M HCl is needed to react completely with 0.100 mols of Pb(NO3)2? Molarity (M): #of moles VOl. 2HCI +PB(WO3)zCap-PbC12laghtZ O. 200 0. 500M 0.200 -0.400L 0.500

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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