Sodium reacts violently with water according to the equation: 2 Na(s) + 2 H20()→2 NAOH(aq) + H2g) The resulting solution has a higher temperature after the reaction. What are the signs of AH and AS for this reaction?

Q: When a 12.8 g sample of KCl dissolves in 75.0 g of water in a calorimeter, the temperature drops…

A: we have to calculate the enthalpy change for the reaction

Q: 2.045 g of a new compound with formula C9H8O2 is burned in a bomb calorimeter.  During the…

A:

Q: Calculate the work (w) and ΔEo, in kJ, at 298 K and 1 atm pressure, for the combustion of one mole…

A: Given-> ∆H° = -3169.3 KJ/mole T= 298 K P =1 atm

Q: Determine the Sign of #H?

A: Answer Sign of H for a reaction

Q: seM Determine the mass (in g) of O2lg) that was consumed during this

A: A combustion reaction is a type of chemical reaction in which a compound and an oxidant is reacted…

Q: Calculate ΔrHΔrH for the following reaction: CaO(s)+CO2(g)→CaCO3(s) Use the following reactions…

A: 1- First reverse the Last equation : 2CaO(s) ------> 2Ca(s) + O2(g)..... (4)  ∆H1 = +1269.8…

Q: What is the sign of As for this reaction? 2 NaN3(s) → 2 Na(s) + 3 N2(g) (This is the chemical…

A: Given reaction is,  2NaN3 (s) ---------> 2Na(s) +3N2(g)

Q: Given that AH°; for HCl(g) is -92.3 kJ/mol, calculate the AH°; in kJ/mol for FeCl2 (s).

A:

Q: 31. Without doing any calculations, determine the sign of ASy, for each chemical reaction. a. 2…

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Q: A,H negative (-) - When the reaction is product favored only at high temperature. A,S" positive (+)…

A: “Since you have asked multiple question, we will solve the first bath of question [4 Questions] for…

Q: Calculate the work (w) and ΔEo, in kJ, at 298 K and 1 atm pressure, for the combustion of one mole…

A: Given that,ΔHº = -1427.7KJ/moleT = 298 KNow the balance equation is

Q: Calculate ΔSº for the reaction using the data table provided. 2 KClO3(s) → 2 KCl(s) + 3 O2(g)…

A:

Q: A 72.0 mL sample of 1.00 M NAOH is mixed with 59.0 mL of 1.00 M H,SO, in a large Styrofoam coffee…

A: The given thermochemical equation is: H2SO4(aq) + 2NaOH(aq)  ----> Na2SO4(aq) + 2H2O(l) ; ∆Hrxn =…

Q: Given the reactions, X(s) + 0,(g) → XO(s) AH = -984.1 kJ XCO,(s) → XO(s) + CO,(g) AH = +434.1 kJ…

A: Hess' law of constant heat summation: The Hess law states that the change of enthalpy in a chemical…

Q: If for the reaction: 2Fe(s) + O2(g) →2F€O(s) AHrn= -544 kJ/mol rxn, then for the reaction: FeO(s)…

A: Given,  2Fe(s) + O2(g)→ 2FeO(s)  ∆Hrxn = - 544 kJ/mol

Q: Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction:

A:

Q: Calculate ΔHrxn for the following reaction: BaO(s)+CO2(g)→BaCO3(s)   Use the following reactions…

A:

Q: A 1.31-g sample of maleic acid (C4H4O4) is burned in a bomb calorimeter and the temperature…

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Q: The ΔHr° values for the following equations are: 2Fe(s)+O2 (g)→Fe2O3 (s) ΔHr°=-206kJ/mol 3Fe(s)+2O2…

A: Hess's law: The heat change of a reaction is independent upon the number of steps. Lavoisier and…

Q: the

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Q: Calculate ΔH in kJ for the reaction: 2CH3OH(l) + 3O2(g) → 2CO2(g) + 4H2O(l) given that the standard…

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Q: A solid sample of copper, Cu(s), is placed in a test tube containing a solution of nitric acid,…

A: Cu(s)  + 4HNO3 (aq) → Cu(NO3)2 (aq) + 2 NO2 (g) + 2H2O(l) + heat  △Hsys  is negative. Reaction is…

Q: The decomposition of calcium carbonate is given by the reaction, CaCO3(s) → CaO(s) + CO2(g).…

A: (a)The reaction for the decomposition of one mole of calcium carbonate is obtained by reversing the…

Q: a balloon filled with ammonia gas is injected with water. the balloon feels warm to the touch and…

A: Sign convention heat released = positive heat absorbed = negative

Q: Use ΔH formation information provided to calculate ΔH of the reaction (in kJ) for the following:…

A: In this question, we have to find out the correct answer of given problem by the help of Enthalpy…

Q: Solid potassium fluoride is dissolved in water in a perfect calorimeter. When 10.00 grams of…

A: In this question we have to calculate ΔHº for the reaction below KF (s) ➝ K+ (aq) + F – (aq)…

Q: When 4.20 g of solid NH4NO3 dissolves in 50.0 g of water at 26.8°C in a calorimeter, the temperature…

A: The heat of a substance is given as:

Q: When 4.04 g of solid NH4NO3 dissolves in 50.0 g of water at 26.0°C in a calorimeter, the temperature…

A: Given that: Weight of NH4NO3 = 4.04 g  Heat (q) = 1.29 kj  Molar mass of NH4NO3 = 80 g/mole Enthalpy…

Q: calculate ΔE for the combustion reaction per mole of xanthone burned (kJ/mol).

A:

Q: Ozone (O3) in the atmosphere is subject to reaction with nitric oxide (NO) as O3(g)   +  NO(g)   ->…

A:

Q: A 1.27-g sample of fumaric acid (C4H4O4) is burned in a bomb calorimeter and the temperature…

A: Divide the total heat gain by the calorimeter with number of moles of fumaric acid.

Q: When 25.0 mL of 1.00 M H2SO4 is added to 50.0 mL of 1.00 M NaOH in a coffee-cup calorimeter at 25°C,…

A: Given: Density= 1.00 g/mL The volume of H2SO4= 25.0 mL The volume of NaOH= 50.0 mL The concentration…

Q: 20) Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction:…

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Q: reacts vi 2 Nas) +2 HO) 2 Na ulting solution has a higher temperature than the water prie ms of AH…

A: As temperature is higher than water. It means it is released in the given reaction,  □H = negative

Q: Using the ΔHo for the reaction calculate the increase in temperature of the resultant salt solution…

A: Recall the given reaction as follows     HClaq + NaOHaq → NaClaq + H2Ol  , ∆Ho=-55.9 kJ/mol Here…

Q: If given 2Al(s) + 3/2 O2(g) – Al203(s), AH = -1,670 kJ/mol for Al203(s), determine AH for the…

A: We have a reaction whose ∆H0f is given as -1670 KJ/ mol We have to calculate the ∆H°f for the given…

Q: The ΔHo reaction for the oxidation of ammonia 4NH₃(g) + 5O₂(g) → 4NO(g) + 6H₂O(g) is -905.2 kJ.…

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Q: In a coffee cup calorimeter, 3.00 g of NaOH (molar mass 40.00g/mol) was mixed with 75.0 mL of 1.00M…

A: Given, Mass of NaOH = 3.00 g Volume of HNO3 = 75 ml Concentration of HNO3 = 1.00M T1 = 31.3∘C T2=…