Under which circumnstances is it appropriate to apply the pre-equilibrium approximation

Q: Ethene reacts with steam in the presence of an acid catalyst to form ethanol. CH2=CH2(g) + H20(g) =…

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Q: In the reaction PC l3(g) +C l2(g) ⇋PC l5(g) the Keq value at 300 K is 14.15. Initially, 0.81 mol…

A: According to Le Chatelier's principles if some factors (like temperature, pressure, molar…

Q: For a reaction A goes to B, DG is +7.67 kcal mol–1. At 298 K, what percentage of B will be present…

A: The reaction taking place can be written as  A -----> B Given : ΔG = 7.67 Kcal/mol

Q: Hydrogen chloride and oxygen react to form water and chlorine, like this: 4HCI(2)+0,(2) -…

A: The equilibrium is the state at which rate of forward direction is equal to rate of backward…

Q: A mixture of 0.06906 mol of CH4, 0.01224 mol of H2S, 0.08482 mol of CS2, and 0.01029 mol of H2 is…

A: Given that : Initial moles of CH4=0.06906 molInitial moles of H2S=0.01224 molInitial moles of…

Q: Find the concentrations of species in a saturated CaSO4 at room temperature, considering activities.

A: CaSO4 is sparingly soluble. In a saturated solution, the aqueous ions are in equilibrium with the…

Q: What are the basic features of equilibrium?

A: The equilibrium concentrations of reactants and products for a l reaction can be predicted using the…

Q: Into a sealed 1.50 L flask, chemist placed 3.00 × 10 ² mol of phosgene gas (COCI:) and heated it to…

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Q: H2O, 0.02864 mol of CH4, 0.07516 mol of CO, and 0.01990 mol of H2 is placed in a 1.0-L steel…

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Q: represent three systems at equilibrium, all in the same-size containers. (a) Without doing any…

A: (a)  At equilibrium, if the formed product is more relative to the reactant, then the equilibrium…

Q: Explain and write the persons involve and their role/relation in the History of Chemical…

A: Chemical equilibrium is a condition attained when rate of forward reaction is equal to rate of…

Q: Write the reaction quotient expression for the ionization of NH3 in water.

A: In a reversible reaction, the reaction quotient for a reaction gives the relative amount of product…

Q: Define the term law of mass action and show how it relates to the equilibrium-constant (Kc).

A: What is law of mass action and how it relate to Kc ?

Q: Consider the equilibrium system described by the chemical reaction below, which has a value of Kc…

A: Given,  Kc = 4.1 x 10^-4200

Q: with specific examples discuss: a) industrial application of equilibrium reaction b) environmental…

A: ( a ) The main application of Chemical Equilibria in industrial process is to maximise the desired…

Q: The following data were collected for a system at equilibrium at a certain temperature. Calculate…

A: The equallibirium constant can be calculated as:

Q: Write the K (equilibrium) expression for the following reactions: 97 CaCO3(s) CaO(s) + CO2(g)…

A: K is the ratio of  product of concentration of products raised to their stoichiometric coefficient…

Q: Why do we normally exclude pure solids and liquids from equilibrium constant expression

A: we have to explain why pure solids and liquids are not included in the equilibrium constant…

Q: Consider the equilibrium system described be the chemical reaction below, which has a value of Kc…

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Q: Can you explain me how to do the fundamental application of Beer’s Law plot in determining the…

A: Beer–Lambert law       A = εlc Where,     A = absorbance     ε = molar extinction coefficient     l…

Q: Chemical equilibrium is microscopic property or macroscopic property??

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Q: Which of the following processes shows a decrease in entropy? Condensation Combustion Evaporation O…

A: Given statement is :  Which of the following process shows the decrease in entropy = ?  Options are…

Q: (a) Formulate the equilibrium expression for the endo- thermic reaction AgCl-NH3(s) = A£CI(s) +…

A: The equilibrium constant in the gaseous system is Kp, it is expressed in terms of the partial…

Q: The equilibrium constant, Kc, for the following reaction is 55.6 at 698 K. H₂(g) + I2(g) → 2HI(g)…

A: Answer:For any reaction, value of equilibrium constant is equal to the ratio of molar concentration…

Q: A mixture of 0.06529 mol of CH4, 0.04045 mol of H2S, 0.06585 mol of CS2, and 0.03325 mol of H2 is…

A: Given, reaction : CH4(g) + 2 H2S(g) →  CS2(g) + 4 H2(g)  CH4 = 0.06529 mol,  H2S = 0.04045 mol, CS2…

Q: If two reactions sum to an overall reaction, and the equilibrium constants for the two reactions are…

A: If two reactions sum to an overall reaction, then the equilibrium constant of the overall reaction…

Q: 21. When the system is not at equilibrium, the reaction quotient Q for any reaction (A) will…

A: Answer: At any stage of the reaction, value of reaction quotient is equal to the ratio of molar…

Q: Crven NHY SH (s) = NH3(g) + H₂S (g) which at the following options will cause the carilibrium at the…

A: Effect of concentration: The addition of reactant or removal of product will shift the equilibrium…

Q: Apply law of Mass action to heterogeneous equilibrium.

A: Law of mass action states that the rate of any chemical reaction is directly proportional to the…

Q: 4. Consider an equilibrium mixture of the following chemical reaction : Fe"(aq) + SCN (aq)…

A: Here 20 cm^3 of 0.03 M Fe(NO3)3 is mixed with 10 cm^3 of 0.03 M KSCN in acidic medium.The…