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What is the effect of changing the concentration of reactants on the reaction rate of a chemical reaction and how does this impact the overall sustainability of the reaction?

asked 5 days ago in Chemical kinetics by HarryWcc2527 (730 points)

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What is the effect of changing the concentration of reactants on the reaction rate and sustainability in a chemical reaction?

asked 5 days ago in Chemical kinetics by HildredCampo (710 points)

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Calculate the reaction quotient Q for the chemical reaction below using the given concentrations of reactants and products at a temperature of 25°C:2H2(g) + O2(g) -> 2H2O(g)[H2] = 0.10 M, [O2] = 0.05 M, [H2O] = 0.08 M.

asked 5 days ago in Chemical thermodynamics by MarilouArnde (440 points)

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Considering a molecule with a known ground state configuration, how can one determine the electronic excited states and their corresponding optical properties using computational methods in quantum chemistry?

asked 5 days ago in Quantum Chemistry by Mozelle44F33 (870 points)

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Calculate the standard enthalpy change for the combustion of ethene gas (C2H4(g)) to form carbon dioxide gas (CO2(g)) and water vapor (H2O(g)), given the following thermochemical equations: C2H4(g) + 3O2(g) → 2CO2(g) + 2H2O(g) ΔH°=-1411 kJ/mol2H2(g) + O2(g) → 2H2O(g) ΔH°=-484 kJ/mol

asked 5 days ago in Chemical thermodynamics by DerrickLavin (470 points)

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Consider a chemical reaction in which X and Y combine to form XY at equilibrium: X + Y ⇌ XY The equilibrium constant for the reaction is Kc = 1.2x10^-4. Initially, [X] = 0.2 M and [Y] is unknown. If 0.1 M of Y is added to the reaction mixture, what will be the new equilibrium concentration of XY?

asked 5 days ago in Chemical equilibrium by Zane21409434 (350 points)

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How does changing the pH of a solution affect the equilibrium position of an acid-base reaction between a weak acid and its conjugate base? Provide a detailed explanation and real-life examples.

asked 5 days ago in Chemical equilibrium by GilbertoVall (370 points)

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Consider the redox reaction 2Fe^2+(aq) + H2O2(aq) + 2H^+(aq) ⟷ 2Fe^3+(aq) + 2H2O(l). If a catalyst is added to the reaction mixture at equilibrium, will the concentration of Fe^3+ increase, decrease or remain the same? Justify your answer mathematically.

asked 5 days ago in Chemical equilibrium by TheronBeor24 (410 points)

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Consider the reaction:$$\mathrm{N_2(g) + 3H_2(g) <=> 2NH_3(g)}$$At a certain temperature, the equilibrium constant $K_c$ for this reaction is $5.6 \times 10^{-5}$. If a reaction vessel initially contains only $\mathrm{0.10\,mol}$ of $\mathrm{N_2}$ and $\mathrm{0.20\,mol}$ of $\mathrm{H_2}$, what will be the equilibrium concentrations of $\mathrm{N_2}$, $\mathrm{H_2}$, and $\mathrm{NH_3}$ once the reaction reaches equilibrium?

asked 5 days ago in Chemical reactions by KiaCherry527 (550 points)

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Consider the reaction: 2NOBr(g) <=> 2NO(g) + Br2(g), which has an equilibrium constant of 1.5 x 10^-5 at a certain temperature. If you start with 0.10 M of NOBr and let the reaction reach equilibrium, find the equilibrium concentrations of NOBr, NO, and Br2.

asked 5 days ago in Chemical equilibrium by StevenSparks (450 points)

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Consider the reaction: N2(g) + 3H2(g) ⇌ 2NH3(g)If the reaction mixture initially contains 0.10 mol N2, 0.20 mol H2 and 0.15 mol NH3 at equilibrium at 450 K, and the number of moles of NH3 is increased to 0.25 mol at constant temperature, predict the direction in which the reaction will proceed to reach a new equilibrium.

asked 5 days ago in Chemical equilibrium by EloiseMorshe (410 points)

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How does changing the concentration of the reactants affect the equilibrium constant and the reaction rate of the reaction between iodine and propanone in acidic solution?

asked 5 days ago in Chemical kinetics by DerekMcQuay (550 points)

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Consider the reaction: 2H2O (g) ⇄ 2H2 (g) + O2 (g) At 1000 K, the equilibrium constant Kc for this reaction is 4.17 x 10^-5. Suppose that initially, 0.10 moles of H2O, 0.20 moles of H2, and 0.20 moles of O2 are placed in a 1.0 L container at 1000 K. What will be the equilibrium concentrations of H2O, H2, and O2?

asked 5 days ago in Chemical equilibrium by GusBeckett50 (270 points)

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Consider the reaction N2O4(g) ⇌ 2NO2(g) which is exothermic. If the pressure of the system is increased, predict the direction in which the equilibrium will shift, and explain your answer using Le Chatelier's principle.

asked 5 days ago in Chemical reactions by CareyKellerm (370 points)

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Consider the reaction A + B ⇌ C + D, which has an equilibrium constant of 2.0 x 10^-3 at a given temperature. Initially, 0.10 mol of A and 0.20 mol of B are placed in a flask. Calculate the equilibrium concentrations of all species in the flask.

asked 5 days ago in Chemical equilibrium by ArronY739552 (170 points)

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Consider the following unbalanced chemical equation: Fe + HCl → FeCl3 + H2 A student needs to balance this chemical equation in order to determine the coefficients of each reactant and product. What are these coefficients, and how did you arrive at them?

asked 5 days ago in Chemical reactions by MarisaReich6 (550 points)

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Design a chemical reactor for the production of 1000 kg per hour of ammonia through the Haber process, given a feedstock gas composition of nitrogen and hydrogen in a 3:1 molar ratio, and operating conditions of 450°C at 100 bar pressure. Determine the reactor size and necessary input flow rates of reactants, and identify any key design considerations that need to be taken into account.

asked 5 days ago in Chemical engineering by AshleighBles (490 points)

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Consider the chemical equation: Fe + H2SO4 → FeSO4 + H2 What is the coefficient of Fe when the equation is balanced using the smallest whole number coefficients?

asked 5 days ago in Chemical reactions by PearlHayner4 (270 points)

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Consider a weak acid, HA, with a dissociation constant, Ka = 1.8 x 10^-5. What will be the effect on the concentration of [H3O+] and the degree of ionization of the acid if 0.1 moles of HCl is added to 1 liter of a 0.1 M solution of HA?

asked 5 days ago in Chemical equilibrium by BeatriceBerm (570 points)

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Consider a system that consists of water and sodium chloride (NaCl) at room temperature and atmospheric pressure. The student is asked to determine the minimum amount of NaCl that needs to dissolve in 100 grams of water in order to form a saturated solution. The student should also calculate the molar solubility of NaCl in the solution.

asked 5 days ago in Physical Chemistry by LatiaHipple6 (550 points)

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