Ex 21 c Chemos 12Homework Answers
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Ex 21 c Chemos 12
1. State the formula of a molecule or ion representing each...
Name: Lab Section: Date : Experiment Vill: Oxidation-Reduction Review Questions ( 30 pts) 1. (4 pts)...
Name: Lab Section: Date : Experiment Vill: Oxidation-Reduction Review Questions ( 30 pts) 1. (4 pts) Give the oxidation number for the specified atom in the following compounds. a. Phosphorus in phosphorous acid, H3PO, b. Chromium in dichromate ion, Cr20,2 2. (4 pts) Calculate the grams of iron ion present in 1.25 ml of a solution that required 2.20 mL of 0.02115 M KMnO, in a titration going to a fait pink endpoint. 3. (2 pts) In acid-base titrations an...
e) What mass of silver nitrate must be added in order to precipitate all of the...
e) What mass of silver nitrate must be added in order to precipitate all of the anion that was left dissolved in the solution after the precipitation reaction had occurred? (4 pts) 2 CaCl2 lags t2 AgNO3 -> 2Ag Cl (s) + Ca(NO3)2 Lago 9. What .. orbital? 10. What is bond order 11. Worksheet #12 1. Write one sentence to explain whol oxidation numbers reveal about the stoms in a molecule? 2. AJ Give a brief explanation os to...
16. Determine the oxidation state and the coordination number of the metal ion in the following...
16. Determine the oxidation state and the coordination number of the metal ion in the following coordination compound: [Co(H20)4(NH3)(OH)]Ch Oxidation number Coordination number 17. Use the redox table below to answer the following questions: Which is the weakest reducing agent in the table? Which is the strongest oxidizing agent in the table? Name the elements or ions that can be oxidized by Pb2* ETV) Half Reaction +2.87 F2 (g) + 2e-→ 2F-(aq) +1.359 Cl2(g)2 2Cl- (aq) Br20) 22Br (ag) O2(8)...
Question 1 9 pts Below is a partial data table with the hypothetical amounts of reagents...
Question 1 9 pts Below is a partial data table with the hypothetical amounts of reagents you used for the oxidation of borneol, plus the hypothetic final yield of product you obtained. reagent MW conc(M) d/g/mL) vol(mL) mass (mg) borneol 154.25 118.3 NaCl 1 0.15 Oxone 307.37 232.1 EtOAC 0.897 0.4 camphor 152.24 yield camphor (mg) 99.2 Using these amounts, calculate the following values. Answers should be reported to the correct level of significant figures. Note: equivalents are usually based...
3) Use the mole ratios contained in both equation 3 and equation 4 to calculate the...
3) Use the mole ratios contained in both equation 3 and
equation 4 to calculate the
volume (in mL) of 0.0100 M potassium iodate solution needed to
completely oxidize all
of the ascorbic acid contained in 20.00 mL of 0.0200 M
ascorbic acid solution.
concentration of the titrant can be used along with the mole ratios from the reaction equations to determine the amount of ascorbic acid in the solution Chemical Reactions involved with the redox titration: Equation 1 shows...
Problem 1. Label each of the following items as an ionic compound. molecule: (a) LiCI (b)...
Problem 1. Label each of the following items as an ionic compound. molecule: (a) LiCI (b) H2O (c) NaF element, or : (a) Problem 2. Label each of the following items as an ionic compound. molecule: (a) CO2: (b) CaO; (c) N2. Ans: (a) Problem 3. Write the ion symbol for an atom with the given number of protons and electrons: (a) 11 protons and 10 electrons; (b) 35 protons and 36 electrons; (c) 7 pro- tons and 10 electrons....
I meed help with questions 1-7 for organic chemistry lab Questions 1. How do abnormally low GABA (yaminobutryic aci...
I
meed help with questions 1-7 for organic chemistry lab
Questions 1. How do abnormally low GABA (yaminobutryic acid) levels affect a person's behavior? Why 2. Chemically speaking how does Dilantin help to control epileptic seizures? es 3. Ammonium nitrate was added to the reaction mixture in the formation of benzyl from benzoin. What was the purpose of the ammonium nitrate? C 4. In forming benzyl, a catalytic amount of cupric acetate but an excess of ammounium nitrate was ed....
Section Name Experiment 12 Advance Study Assignment: The Alkaline Earths and the Halogens I. As pure...
Section Name Experiment 12 Advance Study Assignment: The Alkaline Earths and the Halogens I. As pure clements, all of the halogens are diatomic molecular species, Their melting points are: F,, 54 K: Br 266 K; and I, 387 K. Using the Periodic Table, predict as best you can the molecular Cl., 172 1 formula of elemental astatine, At, the only radioactive element in this family. Also predict whether it will be a solid, liquid, or gas at rOom temperature. Elemental...
I need help with questions 1-8 POST-LAB: LABORATORY 11 Complete on a separate sheet of paper. 1. Indicate whether the molecule is an ion. Then, indicate whether the molecule is polar m. I n. H...
I need help with questions 1-8
POST-LAB: LABORATORY 11 Complete on a separate sheet of paper. 1. Indicate whether the molecule is an ion. Then, indicate whether the molecule is polar m. I n. H,PO o. BrO, p. IF q CO2 a. HCN b. H,SO c. HNO, d. BF H,CO, i. SF j. BeCl k. PO, 1. SO, e. XeF f H,O Calculate the number of valence electrons in each structure in question 1 2. Draw a correct Lewis dot...
Q 1(a) [13.33 Marks] Levels of dissolved oxygen in water can be determined by the Winkler...
Q 1(a) [13.33 Marks] Levels of dissolved oxygen in water can be determined by the Winkler method in the Leaving Certificate Chemistry course as follows: Under alkaline conditions manganese(II) sulphate produces a white precipitate of manganese(II) hydroxide: Mn2+(aq) + 2OH-(aq) → Mn(OH)2(s) This reacts with the dissolved oxygen to produce a brown precipitate. 2Mn(OH)2(s) + O2(aq) → 2MnO(OH)2(s) Addition of concentrated H2SO4 releases free iodine from KI. MnO(OH)2(s) + 4H+(aq) + 21-(aq) + Mn2+(aq) + 12(aq) + 3H2O(1) The free...
Name: Lab Section: Date : Experiment Vill: Oxidation-Reduction Review Questions ( 30 pts) 1. (4 pts) Give the oxidation number for the specified atom in the following compounds. a. Phosphorus in phosphorous acid, H3PO, b. Chromium in dichromate ion, Cr20,2 2. (4 pts) Calculate the grams of iron ion present in 1.25 ml of a solution that required 2.20 mL of 0.02115 M KMnO, in a titration going to a fait pink endpoint. 3. (2 pts) In acid-base titrations an...
e) What mass of silver nitrate must be added in order to precipitate all of the anion that was left dissolved in the solution after the precipitation reaction had occurred? (4 pts) 2 CaCl2 lags t2 AgNO3 -> 2Ag Cl (s) + Ca(NO3)2 Lago 9. What .. orbital? 10. What is bond order 11. Worksheet #12 1. Write one sentence to explain whol oxidation numbers reveal about the stoms in a molecule? 2. AJ Give a brief explanation os to...
16. Determine the oxidation state and the coordination number of the metal ion in the following coordination compound: [Co(H20)4(NH3)(OH)]Ch Oxidation number Coordination number 17. Use the redox table below to answer the following questions: Which is the weakest reducing agent in the table? Which is the strongest oxidizing agent in the table? Name the elements or ions that can be oxidized by Pb2* ETV) Half Reaction +2.87 F2 (g) + 2e-→ 2F-(aq) +1.359 Cl2(g)2 2Cl- (aq) Br20) 22Br (ag) O2(8)...
Question 1 9 pts Below is a partial data table with the hypothetical amounts of reagents you used for the oxidation of borneol, plus the hypothetic final yield of product you obtained. reagent MW conc(M) d/g/mL) vol(mL) mass (mg) borneol 154.25 118.3 NaCl 1 0.15 Oxone 307.37 232.1 EtOAC 0.897 0.4 camphor 152.24 yield camphor (mg) 99.2 Using these amounts, calculate the following values. Answers should be reported to the correct level of significant figures. Note: equivalents are usually based...
3) Use the mole ratios contained in both equation 3 and
equation 4 to calculate the
volume (in mL) of 0.0100 M potassium iodate solution needed to
completely oxidize all
of the ascorbic acid contained in 20.00 mL of 0.0200 M
ascorbic acid solution.
concentration of the titrant can be used along with the mole ratios from the reaction equations to determine the amount of ascorbic acid in the solution Chemical Reactions involved with the redox titration: Equation 1 shows...
Problem 1. Label each of the following items as an ionic compound. molecule: (a) LiCI (b) H2O (c) NaF element, or : (a) Problem 2. Label each of the following items as an ionic compound. molecule: (a) CO2: (b) CaO; (c) N2. Ans: (a) Problem 3. Write the ion symbol for an atom with the given number of protons and electrons: (a) 11 protons and 10 electrons; (b) 35 protons and 36 electrons; (c) 7 pro- tons and 10 electrons....
I
meed help with questions 1-7 for organic chemistry lab
Questions 1. How do abnormally low GABA (yaminobutryic acid) levels affect a person's behavior? Why 2. Chemically speaking how does Dilantin help to control epileptic seizures? es 3. Ammonium nitrate was added to the reaction mixture in the formation of benzyl from benzoin. What was the purpose of the ammonium nitrate? C 4. In forming benzyl, a catalytic amount of cupric acetate but an excess of ammounium nitrate was ed....
Section Name Experiment 12 Advance Study Assignment: The Alkaline Earths and the Halogens I. As pure clements, all of the halogens are diatomic molecular species, Their melting points are: F,, 54 K: Br 266 K; and I, 387 K. Using the Periodic Table, predict as best you can the molecular Cl., 172 1 formula of elemental astatine, At, the only radioactive element in this family. Also predict whether it will be a solid, liquid, or gas at rOom temperature. Elemental...
I need help with questions 1-8
POST-LAB: LABORATORY 11 Complete on a separate sheet of paper. 1. Indicate whether the molecule is an ion. Then, indicate whether the molecule is polar m. I n. H,PO o. BrO, p. IF q CO2 a. HCN b. H,SO c. HNO, d. BF H,CO, i. SF j. BeCl k. PO, 1. SO, e. XeF f H,O Calculate the number of valence electrons in each structure in question 1 2. Draw a correct Lewis dot...
Q 1(a) [13.33 Marks] Levels of dissolved oxygen in water can be determined by the Winkler method in the Leaving Certificate Chemistry course as follows: Under alkaline conditions manganese(II) sulphate produces a white precipitate of manganese(II) hydroxide: Mn2+(aq) + 2OH-(aq) → Mn(OH)2(s) This reacts with the dissolved oxygen to produce a brown precipitate. 2Mn(OH)2(s) + O2(aq) → 2MnO(OH)2(s) Addition of concentrated H2SO4 releases free iodine from KI. MnO(OH)2(s) + 4H+(aq) + 21-(aq) + Mn2+(aq) + 12(aq) + 3H2O(1) The free...
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