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Concept explainers
Interpretation:
Six mole-to-mole conversion factors has to be written that can be derived from the chemical equation
Concept Introduction:
The coefficients that are present in a balanced chemical equation is like subscripts in the chemical formula. These coefficients can be interpreted in two levels. One is a microscopic level and another is macroscopic level.
Microscopic level:
The coefficients that are present in a balanced chemical equation gives numerical relationship between the formula units consumed or produced when a
Macroscopic level:
In a balanced chemical equation, the coefficients gives information about the fixed molar ratios among the substance that is consumed or produced when a chemical reaction takes place.
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Chapter 6 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- Consider the following reaction at 25°C with the ΔG°’ = +1800 J/mol for the forward reaction.The molar concentrations at the beginning of the reaction were [A] = 19 mM and [B] = 10 mM.After 1 hour, the concentrations were [A] = 16 mM and [B] = 13 mM. Calculate the ΔG of the reaction at the 1 hour timepoint. Please round to 1 decimal point.Gas constant = 8.315 J/mol Karrow_forwardAt 298 K the standard enthalpy of combustion of sucrose is −5797 kJ mol−1 and the standard Gibbs energy of the reaction is −6333 kJ mol−1. Estimate the additional non-expansion work that may be obtained by raising the temperature to blood temperature, 37 °C.arrow_forwardThe reaction CO (g) + H2O(g) CO2(g) 2 + H2(g) has ΔH = -41 kJ/mol. Does the amount of H2 in an equilibrium mixture increase or decrease when the temperature is decreased?arrow_forward
- A 0.578-g saltwater sample was titrated with 1.864 g AgNO3 solution to reach the endpoint of the reaction. Calculate the following by showing all necessary solutions: 1. mol AGNO3 if the AGNO3 solution was prepared by dissolving 5.0 g of AgNO3 in distilled water until 100 ml is reached. (MW AgNO3 = 169.87 g/mol) 2. % Cl in the saltwater sample (MM CI = 35.45 g Cl /mol CI" )arrow_forwardWhat are the expected results for the reactions: (a) CuSO4 with iron, (b) KMnO4 with ethanol, and (c) KMnO4 with acetaldehyde? Write the chemical equation of the reactions, and identify which substance is reduced and which is oxidized.arrow_forwardA student ran the following reaction in the laboratory at 759 K: N2(g) + 3H2(g) = 2NH3(g) When she introduced 3.13×10-2 moles of N2(g) and 6.00x102 moles of H2(g) into a 1.00 liter container, she found the equilibrium concentration of NH3(g) to be 6.84×10-4 M. Calculate the equilibrium constant, K., she obtained for this reaction. K. =arrow_forward
- Potassium, a silvery metal, reacts with bromine, a corrosive, reddish liquid, to yield potassium bromide, a white solid. Write the balanced equation, and identify the oxidizing and reducing agents.arrow_forwardTriosephosphate isomerase catalyzes the conversion of glyceraldehyde 3-phosphate to dihydroxyacetone phosphate. This reaction has a Keq of 22.2. What is the standard free-energy change for this reaction? -7,680 kJ/mol -7.68 kJ/mol -3.34 kJ/mol -0.644 kJ/mol 7.68 kJ/molarrow_forwardCalculate AG for the reaction G+ H I + J when [G] = 0.0132 mM, [H] = 35.1 uM, [1] = 55.6 uM, [J] 18.7 uM, the temperature = 37 °C and AG°= -48.2 kJ/mol. Keep concentration units in uM. -50.3 kJ/mol -39.1 kJ/mol O-46 kJ/mol -25.8 kJ/molarrow_forward
- Direct methanol fuel cells (DMFCS) have shown some promise as a viable option for providing "green" energy to small electrical devices. Calculate E° for the reaction that takes place in DMFCS: CH3OH(I) + 3/2 02(g) → CO2(g) + 2 H20(1) Use the following values. AG°H,0(1) = -237 kJ/mol AG°O2(g) = 0 kJ/mol AG°CO2(9) = -394 kJ/mol AG°CH3OH(I) = -166 kJ/mol. E° = Varrow_forwardCalculate the Keq (report up to two decimal places and do not use scientific notation) for the net reaction at 298.15K. (see attached image) Note: R = 1.98 x 10 -3 kcal/mol-Karrow_forwardThe main constituents in vinegar are water and ethanoic acid (CH3COOH). In order to determine the concentration of acid in homemade vinegar, a student titrated 25 cm3 of 001 M NaOH against the vinegar. The equation for the reaction is: CH3COOH(aq) + NaOH(aq) ® CH3COONa(aq) + H2O(l) The following titration results were obtained: Burette readings (cm3) Rough 1 2 Final burette reading 20.10 38.90 31.40 Initial burette reading 0.10 20.00 12.50 Volume of vinegar used 20.00 18.90 18.90 (a) What volume of vinegar should be used in the calculation? (b) What is the mole ratio of NaOH:CH3COOH? (c) Calculate the number of moles of alkali in 25 cm3 of NaOH solution used. (d) How many moles of acid were used in the titration? (e) Calculate the…arrow_forward