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How does the excitation mechanism of a molecule affect its electronic absorption spectrum, and how can ab initio calculations be used to predict the excited state dynamics of this molecule?

asked Feb 20 in Computational Chemistry by BFFRachelle (1.8k points)

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What is the exchange current density for the oxidation reaction of copper in a 1 M CuSO4 solution, given that the electrochemical rate constant is 5.2 × 10^-3 cm/s and the surface area of the electrode is 0.05 cm^2?

asked Feb 20 in ElectroChemistry by Estella80D9 (2.2k points)

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How does the excess of nitrogen and phosphorus in water bodies promote the growth of harmful algal blooms, and what are the chemical mechanisms behind this phenomenon?

asked Feb 20 in Environmental Chemistry by HolliePutman (2.0k points)

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How has the evolution of chemistry impacted our understanding of the elements and their properties?

asked Feb 20 in Chemical education by SvenMcConnel (1.3k points)

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How has the evolution of chemistry impacted modern scientific advancements, and what historical discoveries have led us to our current understanding of chemistry?

asked Feb 20 in Chemical education by AbbieGladden (2.1k points)

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What is the mechanism of the esterification reaction between acetic acid and ethanol, and how does the reaction conditions affect the yield of the product?

asked Feb 20 in Organic Chemistry by KelleS495456 (1.9k points)

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How will the equilibrium position of the reaction N2(g) + 3H2(g) ⇌ 2NH3(g) shift in response to an increase in pressure if the reaction is initially at equilibrium?

asked Feb 20 in Chemical equilibrium by LawrenceMcGr (1.8k points)

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How does the equilibrium position of an acid-base reaction change when the pH of the solution is altered?

asked Feb 20 in Chemical equilibrium by HalleySomers (1.8k points)

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How does the equilibrium position of a chemical reaction change with an increase or decrease in pressure? Provide an example of a chemical reaction and explain how the change in pressure affects its equilibrium position.

asked Feb 20 in Chemical equilibrium by JoycelynFran (2.7k points)

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What is the equilibrium constant for the reaction between ethanoic acid and water, given that the dissociation constant (Ka) for ethanoic acid is 1.8 x 10^-5 at 25°C?

asked Feb 20 in Chemical equilibrium by VerleneSchut (1.7k points)

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What is the equilibrium constant expression for the reaction of a weak acid HA dissociating in water, and how would you determine the equilibrium constant (Ka) experimentally using pH measurements?

asked Feb 20 in Chemical equilibrium by AnaYdc643424 (1.8k points)

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What is the equilibrium constant expression for the reaction: N2 (g) + 3H2 (g) ⇌ 2NH3 (g) If the equilibrium concentrations of N2, H2, and NH3 are 0.25 M, 0.08 M, and 0.40 M, respectively, what is the numerical value of the equilibrium constant Kc?

asked Feb 20 in Chemical reactions by NanVanwagene (1.8k points)

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What is the equilibrium constant expression for the following redox reaction at standard conditions: Fe2+(aq) + Cu(s) ⇌ Fe3+(aq) + Cu2+(aq)

asked Feb 20 in Chemical equilibrium by JeannetteNun (1.6k points)

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What is the equilibrium constant expression for the following reaction at 298 K?H2(g) + I2(g) ⇌ 2HI(g)

asked Feb 20 in Physical Chemistry by FilomenaWago (1.8k points)

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What is the equilibrium constant expression for the following gas phase reaction at 25°C?N2(g) + 3H2(g) ⇌ 2NH3(g)Given the equilibrium concentrations of N2, H2 and NH3, calculate the value of the equilibrium constant (Kc) for this reaction.

asked Feb 20 in Chemical equilibrium by ClydeC545764 (2.2k points)

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What is the equilibrium constant expression for the following chemical reaction?2NO(g) + O2(g) ⇌ 2NO2(g)

asked Feb 20 in Chemical reactions by JeroldStonem (1.6k points)

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What is the new equilibrium constant for the reaction N2(g) + 3H2(g) ⇌ 2NH3(g) if the initial concentration of NH3 is 0.1 M, N2 is 0.2 M, H2 is 0.3 M, and then more H2 is added until its concentration reaches 0.5 M?

asked Feb 20 in Chemical equilibrium by MaybellHoffm (2.2k points)

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What is the equilibrium constant (Kc) of the following chemical reaction at 25°C and how can it be interpreted?2NO2(g) ⇌ N2O4(g)

asked Feb 20 in Physical Chemistry by BlaineBeasle (2.0k points)

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What is the equilibrium constant (Kc) expression for the reaction N2(g) + O2(g) ⇌ 2NO(g)? If the initial concentrations for N2, O2, and NO are 0.25 M, 0.15 M, and 0.05 M, respectively, what is the value of Kc for the reaction at equilibrium?

asked Feb 20 in Physical Chemistry by Ina75H680861 (2.0k points)

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What is the equilibrium constant (Kc) expression for the following generic chemical reaction?aA(g) + bB(g) ⇌ cC(g) + dD(g)

asked Feb 20 in Physical Chemistry by ConcettaAmse (2.0k points)

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