Be sure to answer all parts. For each reaction, find the value of ΔSo. Report the value with the appropriate sign. (a) 3 NO2(g) + H2O(l) → 2 HNO3(l) + NO(g) 0.027 J/K
(b) N2(g) + 3 F2(g) → 2 NF3(g) J/K
(c) C6H12O6(s) + 6 O2(g) → 6 CO2(g) + 6 H2O(g)
Be sure to answer all parts. For each reaction, find the value of ΔSo. Report the...
1a) For which of the following reactions is ΔSo > 0? a. 2 C2H6(g) + 7 O2(g) à 4 CO2(g) + 6 H2O(g) b. H2CO(g) + O2(g) à CO2(g) + H2O(l) c. N2(g) + 3 H2(g) à 2 NH3(g) d. NH3(g) + HI(g) à NH4I(s) 1b) For a particular chemical reaction ΔH = 7.0 kJ and ΔS = –17 J/K. Under what temperature condition is the reaction spontaneous? a) When T > 412 K. b) The reaction is not spontaneous...
Question 10 2 pts Select ALL the reaction(s) that is/are most likely to have a positive Assys? SiO2(s) + 3 C(s) + SiC(s) + 2 CO(g) 3 NO2(g) + H2O(l) → 2 HNO3(1) + NO(g) 6 CO2(g) + 6 H2O(g) → C6H12O6(s) + 6 O2(g) H2O2(g) →H2O(g) + O2(8) CO(g) + Cl2(g) → COCl2(g)
Be sure to answer all parts. A person inhales air richer in O2 and exhales air richer in CO2 and water vapor. During each hour of sleep, a person exhales a total of about 300. L of this CO2−enriched and H2O-enriched air. (a) If the partial pressures of CO2 and H2O in exhaled air are each 28.3 torr at 37.0°C, calculate the masses of CO2 and of H2O exhaled in 1 h of sleep. -g CO2 -g H2O (b) How...
3) Answer all parts of the following question. a. The reaction: Al(s) + Fe2O3(s) → Fe(s) + Al2O3(s) has ΔH = -847.6 kJ and ΔS = -41.3 J/K at 25°C. Calculate ΔG and determine if it is spontaneous. b. Above what temperature does the following reaction become nonspontaneous? FeO(s) + CO(g) → CO2(g) + Fe(s) ΔH = -11.0 kJ; ΔS = -17.4 J/K c. Find ΔSsurr and predict whether or not this reaction will be spontaneous at 398 K. NH3(g)...
Calculate the standard-state entropy for the following reaction: 6 CO2(g) + 6 H2O(l) ⟶ 1 C6H12O6(s) + 6 O2(g) (If applicable, coefficients of one have been included for clarity.) The standard entropy values are given in the table. Formula S∘ J/(K⋅mol) C6H12O6(s) 212 O2(g) 205 CO2(g) 214 H2O(l) 189
QUESTION 7 A particular reaction has a ΔHo value of -152 kJ and ΔGo of -161 kJ at 484 K. Calculate ΔSo at 484 K in J/K. 1 points QUESTION 8 A particular reaction has a ΔHo value of -125 kJ and ΔSo of -230 J/mol K at 298 K. Assuming that ΔHo and ΔSohardly change with temperature, determine the temperature in K at which the spontaneity of this reaction changes. 1 points QUESTION 9 Given the following...
For the reaction: 2NO(g) + O2(g) ----> 2 NO2(g) ΔGo = −67.3 kJ and ΔSo= 146.5 J/K at 345K and 1 atm. Calculate the standard enthalpy change for the reaction of 3.75 moles of NO(g) at this temperature.Use 4 sig. figures. Hint: The ΔHo (heat absorbed or released) you have calculated is when 2 moles of NO reacted.
Be sure to answer all parts. The reaction between NO2 and CO to produce NO and CO2 is thought to occur in two steps: Step 1: NO2 + NO2 NO + NO3 Step 2: NO3 + CO NO2 + CO2 The experimental rate law is rate = k[NO2]2. (a) Write the equation for the overall reaction. Do not include phase abbreviations. (b) Identify the intermediate(s). NO2 NO3 CO2 CO NO (c) Identify the rate-determining step. (Step 1, Step 2, Neither...
balance each of the following equations Fall 209 CHM 105.004 Exam 2 Answer all the question in order in the blue book. Plesse leave at least two lines between question and show your calculations for full credit. N-6.023 x 10” particles per mol: R 0.08.205 L-atm/(mol-K) b) Al2(PO4) 3 e) CuSO4-5 H2O 1. Calculate the molar masses of: a) (NH4)2SO4 2. Calculate: a) the number of atoms of calcium in a 10.50 g sample of the metal b) the mass...
23. What is AS for the reaction, N2(g) + 3 F2(g) → 2 NF3(g), based on the data table (below)? a. -133.6 J/K b. -278.4 J/K c. +127 J/K d. +521.2 J/K Compound S, J/mol K N2(g) 191.5 F2(g) 202.7 NF3(g) 260.6