What is the entropy change for the solidification of 1.00 oz. (28.3 g) of liquid gold at 1064°C? The enthalpy of fusion of Au is 12.55 kJ/mol.

Q: A chemical reaction has a enthalpy change of 171.8kJ and change in entropy of 788.3 J/K. what is the…

A: For spontaneous reaction ∆G<0 , For non-spontaneous reaction ∆G>0 Where ∆G is change in Gibbs…

Q: 25g of a substance that has a molar mass of 85g is transformed form a liquid to a solid. If the hear…

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Q: certain substance has an enthalpy of fusion of 4.73 kJ/mol and an entropy of fusion of 21.2 J/mol/K.…

A: We know ∆H=∆S×T ∆H=4730j/mol ∆S=21.2j/mol/k So T=4730÷21.2=223.11k

Q: At one time, a common means of forming small quantities ofoxygen gas in the laboratory was to heat…

A: Energy change takes place when reactants convert into product. The heat change of a reaction is…

Q: The reaction                         2 NO(g)   ⇆  N2O4(g) occurs at 25oC under standard state…

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Q: Consider the reaction 2 NO2(g)  N2O4(g) . (a) Using Gf N2O4(g) = 97.79 kJ/mol and Gf NO2(g) = 51.3…

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Q: 6) Consider H;0 going from the gas phase to liquid phase to solid phase. Describe the changes in…

A: In the vapor state, the gas phase of water, water molecules have the highest kinetic energy and this…

Q: At 25 °C, what is the Keq for a reaction where ΔH∘= –9.3 kJ/mol and ΔS∘= 75.5 J/mol·K?

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Q: Mg(s)  +  2HCl(aq) → MgCl2(aq)  +  H2(g) The temperature increases from 23.00 to 33.10 °C as a…

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Q: HI has a normal boiling point of -35.7 and its ΔvapH is 21.16 KJ/mol. Calculate the molar entropy…

A: Chemical thermodynamics is branch of chemistry in which we deal with amount of heat evolved or…

Q: The Δ?vapΔHvap of a certain compound is 42.97 kJ·mol−142.97 kJ·mol−1 and its Δ?vapΔSvap is 76.35…

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Q: A certain substance has an enthalpy of fusion of 6.65 kJ/mol and an entropy of fusion of 22.8…

A: The entropy of fusion of the solid is given by: Where ∆S = change in entropy = 22.8 J/mol/K ∆H =…

Q: The heat of vaporization of water at 373 K is 40.7 kJ>mol. Find q, w, ΔE, and ΔH for the…

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Q: The reaction                         2 NO(g)   ⇆  N2O4(g) occurs at 25oC under standard state…

A: The equilibrium reaction given in the question is -  2 NO (g)   ⇌  N2O4 (g) Standard Gibbs free…

Q: What is ΔH° of the following reaction? CO2(g) + 2CH4(g) → C3H8(g) + O2(g) Substance ΔH°f (kJ/mol)…

A: Enthalpy of reaction is equal to difference of sum of enthalpy of formation of products and sum of…

Q: 0.700 moles of an unknown solid is placed into water to make 150.0 mL of solution. The solution's…

A: This problem can be solved by using the following formula :…

Q: alculate ΔS per mole for the melting of H2O at  0.°C,  ΔHfus = 6.0 kJ/mol.    J/mol·K

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Q: alculate the entropy change (in J/K) that occurs when 22.8 g of ice melts at its normal melting…

A: Given that: mass of ice = 22.8g melting point , T = 0oC                             =0+273=273K…