Question Completion Status: A Moving to another question will save this response. Question 7 Consider the following reaction: 2H2O2(aq) → 2H2O(l) +O2(g) When 1.0 g of Kl is added to the H202, bubbles of O2 are produced at an increased rate. When the reaction is complete, the mass of KI is 1.0 g. The KI is a A Moving to another question will save this response.

Question Completion Status: A Moving to another question will save this response. Question 7 Consider the following reaction: 2H2O2(aq) → 2H2O(l) +O2(g) When 1.0 g of Kl is added to the H202, bubbles of O2 are produced at an increased rate. When the reaction is complete, the mass of KI is 1.0 g. The KI is a A Moving to another question will save this response.

Introduction to General, Organic and Biochemistry

11th Edition

ISBN:9781285869759

Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Chapter4: Chemical Reactions

Section: Chapter Questions

Problem 4.55P: 4-55 For the reaction: (a) How many moles of N2 are required to react completely with 1 mole of O2?...

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Carbon dioxide from the atmosphere weathers, or dissolves, limestone (CaCO3) by the reaction CaCO3(s)+CO2(g)+H2O(l)Ca2(aq)+2HCO3(aq) Obtain H for this reaction. See Table 6.2 for the data.
4-55 For the reaction: (a) How many moles of N2 are required to react completely with 1 mole of O2? (b) How many moles of N2O3 are produced from the complete reaction of 1 mole of O2? (c) How many moles of O2 are required to produce 8 moles of N2O3?
A student set up an experiment for six different trials of the reaction between 1.00-M aqueous acetic acid, CH3COOH, and solid sodium hydrogen carbonate, NaHCO3. CH3COOH(aq) + NaHCO3(s) NaCH3CO2(aq) + CO2(g) + H2O() The volume of acetic acid was kept constant, but the mass of sodium bicarbonate increased with each trial. The results of the tests are shown in the figure. (a) In which trial(s) is the acetic acid the limiting reactant? (b) In which trial(s) is sodium bicarbonate the limiting reactant? (c) Explain your reasoning in parts (a) and (b).
On Easter Sunday, April 3, 1983, nitric acid spilled from a tank car near downtown Denver, Colorado. The spill was neutralized with sodium carbonate: 2HNO3(aq)+Na2CO3(aq)2NaNO3(aq)+H2O(l)+CO2(g) a. Calculate H for this reaction. Approximately 2.0 104 gal nitric acid was spilled. Assume that the acid was an aqueous solution containing 70.0% HNO3 by mass with a density of 1.42 glcm3. What mass of sodium carbonate was required for complete neutralization of the spill, and what quantity of heat was evolved? (Hf for NaNO3(aq) = 467 kJ/mol) b. According to The Denver Post for April 4, 1983, authorities feared that dangerous air pollution might occur during the neutralization. Considering the magnitude of H, what was their major concern?
list at least three quantities that must be conserved in chemical reactions.
Ethanol, C2H5OH, is a gasoline additive that can be produced by fermentation of glucose. C6H12O62C2H5OH+2CO2 (a) Calculate the mass (g) of ethanol produced by the fermentation of 1.000 lb glucose. (b) Gasohol is a mixture of 10.00 mL ethanol per 90.00 mL gasoline. Calculate the mass (in g) of glucose required to produce the ethanol in 1.00 gal gasohol. Density of ethanol = 0.785 g/mL. (c) By 2022, the U. S. Energy Independence and Security Act calls for annual production of 3.6 1010 gal of ethanol, no more than 40% of it produced by fermentation of corn. Fermentation of 1 ton (2.2 103 lb) of corn yields approximately 106 gal of ethanol. The average corn yield in the United States is about 2.1 105 lb per 1.0 105 m2. Calculate the acreage (in m2) required to raise corn solely for ethanol production in 2022 in the United States.
. A(n) _______ speeds up a reaction without being consumed.
The boxes shown below represent a set of initial conditions for the reaction: Draw a quantitative molecular picture that shows what this system looks like after the reactants are mixed in one of the boxes and the system reaches equilibrium. Support your answer with calculations.
Classify each of the following reactions as (1) a redox reaction (2) a nonredox reaction or (3) cant classify because of insufficient information. a. A combination reaction in which one reactant is an element b. A decomposition reaction in which the products are all elements c. A decomposition reaction in which one of the products is an element d. A displacement reaction in which both of the reactants are compounds
The carbon dioxide exhaled in the breath of astronauts is often removed from the spacecraft by reaction with lithium hydroxide 2LiOH(s)+CO2(g)Li2CO3(s)+H2O(l) Estimate the grams of lithium hydroxide required per astronaut per day. Assume that each astronaut requires 2.50 103 kcal of energy per day. Further assume that this energy can be equated to the heat of combustion of a quantity of glucose, C6H12O6, to CO2(g) and H2O(l). From the amount of glucose required to give 2.50 103 kcal of heat, calculate the amount of CO2 produced and hence the amount of LiOH required. The H for glucose(s) is 1273 kJ/mol.
4.80 The reaction shown below is used to destroy Freon-12 (CF2Cl2), preventing its release into the atmosphere. What mass of NaF will be formed if 250.0 kg of CF2Cl2 and 400.0 kg of Na2C2O4 are heated and allowed to react to completion? CF2Cl2+2Na2C2O42NaF+2NaCl+C+4CO2
4.13 For the following reactions, determine the value of x. 4C+S84CS2 mol S8 yields x mol CS2 CS2+3O2CO2+2SO2 mol CS2 yields x mol SO2 N2H4+3O22NO2+2H2O mol O2 yields x mol NO2 SiH4+2O2SiO2+2H2O 1.3103 mol SiH4 yields x mol H2O