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- 7-16 A quart of milk quickly spoils if left at room temperature but keeps for several days in a refrigerator. Explain.KNO3 at 60oCConsider following reaction: (s) -> Hg(l) + ½ O2 (g) DH = +90.7 kj/mol. Which of the following statements is false ? a. The formation of HgO (s) from liquid Hg and gaseous O2 will release heat. b. The reaction will occur at all temperatures. c. The forward reaction is endothermic. Given following reaction 2 Fp2(g) + O2(g) --> 2F2O (g) Delta H= -43.4 kJ Delta S (Entropy) for the reaction is < 0 because a.Delta H is negative b. There is less disorder when products are formed as there are less moles in product side compared to reactant side c. Rxn is exothermic, exothermic reactions are always spontaneous Spontaneity of reaction can be determined by a. Entropy b. Work; c. Heat of Enthalpy d. Gibbs Free Energy
- If Kc = 1 for the equilibrium 2 A(g) ⇌ B(g), what isthe relationship between [A] and [B] at equilibrium?Volume of HCl: .05 LVolume of NaOH: .05 LVolume total: .10 LMolarity of HCl: 2.00 MMolarity of NaOH: 2.00 MΔT for reaction B: 14.2°C Calculate the value (calories) for the heat of reaction.Which of the following would have a positive value of delta S? You may choose more than one. A) NaHCO3(s) + HC2H3O2(aq) ---> NaC2H3O2(aq) + H2O(l) + CO2(g) B) C3H8(g) + 5 O2(g) ---> 3CO2(g) + 4 H2O(l) C) CO2(s) ----> CO2(g) D) condensation of a gas E) H2O(l,298K) ---> H2O(l,308K)
- Calculate Kc for the following reaction:HNO2(aq) F-(aq) ⇆ HF(aq) NO2-(aq)Ka for HNO2 = 4.50×10-4, Ka for HF = 3.50 ×10-4Insert your answer rounded to 3 significant figuresIn the combustion of C5H8O2 what is the value of the slope expected for the followinggraphs:a. A plot of moles of C5H8O2(y-axis) versus moles of H2O (x-axis)b. A plot of moles of O2 (y-axis) versus moles of CO2 (x-axis)At 525 oC, Keq = 0.387 for the reaction: 1/3 NO2(g) + 1/3 N2O(g) NO(g) (a) What is the value of Keq for the reaction NO(g) 1/3 NO2(g) + 1/3 N2O(g)?Keq =_______ .(b) What is the value of Keq for the reaction NO2(g) + N2O(g) 3 NO(g)?Keq = _________ .(c) What is the value of Keq for the reaction 3 NO(g) NO2(g) + N2O(g)?Keq = ________ .
- Hello. I have another question to ask. How can Ithe answer for this: The sublimation of carbon dioxide at -78°C is CO2 (s)→CO2 (g) ∆Hsub=62.4 kJ/mol. Calculate ∆Ssub when 84.8 g of CO2 sublimes at this temperature.Calculate delta Go at 355 K for each of the reactions: a) CO+2H2=CH3OH b)N2+O2=2NO c)BaCO3=BaO+CO2Rank the follwing temperature from highest to lowest; (I) 0.00°F;(II) 0.00°C; (III) 77.00 K; (IV) 260.00 K; (V)-180.00°C. a. I, IV, II, V, III b. II, V, I, IV, III c. II, V, IV, I, III d. II, IV, I, V, III