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15. What are the signs of AH and AS for this reaction: 2C(s) + 0:(g)>2C0(g)? A)...
AH> 0 2N Brs (s) N, (g) + 3Bra (g) Predict the direction the equilibrium will shift as a result of: The concentration of Nag) is decreased b) c) No change B ОА с D Question 36 2N Brs (s) = N2(g) + 3Br2 (9) ΔΗ > 0 Predict the direction the equilibrium will shift as a result of: The concentration of NBrz(s) is increased b) c) No change A DO С AH> 0 2N Brs () - N, (g)...
DaC. NUL20 1) Find AH, for the reaction 2H2(g) + 2C(s) + O2(g) → C2H5OH(I), using the following thermochemical data. For Hess's Law, rewrite equations to find out AH. C2H5OH (1) +2 02 (g) → 2 CO2 (g) + 3H20 (1) AH = -875.J C(s) + O2(g) → CO2 (g) AH = -394,51 kJ H2(g) + 12 02 (g) → H20 (1) AH = -285.8 kJ
For the reaction S(s,rhombic) + 2CO(g) SO2(g) + 2C(s,graphite) AH = -75.8 kJ and AS =-167.6J/K The standard free energy change for the reaction of 1.88 moles of S(s,rhombic) at 294 K, 1 atm would be This reaction is (reactant, product) favored under standard conditions at 294 K. Assume that AH° and AS are independent of temperature. Submit Answer Try Another Version 2 Item attempts remaining
17. From the following heats of reaction, 2C (graphite) + H2 (g) → C2H2 (g) AH = 227 kJ/mole 6C (graphite) + 3H2 (g) → CH (1) AH = 49 kJ/mole calculate the heat for the reaction 3C2H2 (g) → C6H6 1) A. 632 kJ/mole B. -632 kJ/mole C. -178 kJ/mole D. 178 kJ/mole
What is delta S?
Predict the signs of Delta S and Delta H for the freezing of water into ice at 273 K. a. Delta H > 0 and Delta S < 0 b. delta H = 0 and Delta S > 0 c. Delta H < 0 and Delta S < 0 d. Delta H > 0 and Delta S = 0 e. Delta H < 0 and Delta S > 0
13. Consider the following equation 2C(s) + 2 H20 (g) CH, (g) + CO2(g) Determine the standard enthalpy change for this reaction from the following standard enthalpies of reaction : (1) C(s) + H2O (g) CO(g) + H, (g) AH° - 131.3 kJ (2) CO(g) + H2O (g) CO2(g) + H2(g) AH° - -41.2 kJ (3) CH, (g) + H,0(g) 3H, (g) + CO(g) AH° - 206.1 kJ A 15.3 B. -116.1 C. 378.2 D. -427.0
Given the following equations and AH' values: C(s) + O2(g) + CO2(g) AH = -393.5 kJ H2(g) + 1/2O2(g) - H20 (1) AH = -285.8 kJ 2C2H2 (8) + 5O2(g) + 4CO2(g) + 2H20 (1) AH'= -2598 kJ Determine the heat of reaction (in kJ) at 298 K for the reaction: 2C(s) + H2(8) C2H2 (8) 0-136.8 0-219.8 0-109.9 O-167.1 +226.2
2C0(g) + 4H2O (g) AH-1038 kJ AHy=-566 kJ X: 2CH (g)+30,(g) 2CO(g)+0,(g)2Co, (g) Y 3rd attempt See Periodic Table Part 1 (2 pts) Write the chemical equation obtained when reactions X and Y are added together to produce the reaction Z. Include the states of matter. Remember to write the lowest possible numeric values for the coefficients. x x. He (aq). 8 Z= Part 2 (2 pts) See Hint What is the value of AHz? kJ
1) Find the AH of the following reaction: C(s) + O2(g) à CO2(g) Given the following data: Sro(s) + CO2(g) à SrCO3(s) 2Sro(s) à 2Sr(s) +0,(8) AH = -234 kJ AH = +1184 kJ 2SCO,(s) à 25r(s) + 2C(s) + 302(g) AH = +2440 kJ 2) Find the AH of the following reaction: 3NO,(g) + H2O(l) à 2HNO,(aq) + NO(g) Given the following data: 2NO(g) + O2(g) à 2NO(g) AH=-116 kJ 2N2(g) + 502(g) + 2H2O(l) à 4HNO3(aq) AH =...
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS <0, AG <0 (D) AH<0, AS > 0, AG>O (B) AH > 0, AS > 0, AG <0 (E) AH>0, AS <0, AG>0 (C) AH<0, AS <0, AG<0 5. For the reaction H, (g) +S (8) HS (g), AF- -20.2 kJ/mol and AS = +43.1 J/K mol. Which of these statements is true? (A) The reaction is only spontaneous at low temperatures. (B) The...