P6B.10 Fuel cells show promise as power sources for automobiles. Hydrogen and carbon monoxide have been investigated for use in fuel cells, so their solubilities, s, in molten salts are of interest. Their solubilities in a molten NaNO,/KNO, mixture were found to fit the following expressions: 768 log(s,/molcm³bar")=-5.39-K 980 log(sco/molcm³bar)=-5.98-K Calculate the standard molar enthalpies of solution of the two gases at 570 K.

P6B.10 Fuel cells show promise as power sources for automobiles. Hydrogen and carbon monoxide have been investigated for use in fuel cells, so their solubilities, s, in molten salts are of interest. Their solubilities in a molten NaNO,/KNO, mixture were found to fit the following expressions: 768 log(s,/molcm³bar")=-5.39-K 980 log(sco/molcm³bar)=-5.98-K Calculate the standard molar enthalpies of solution of the two gases at 570 K.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Calculate the solubility at 25 °C of Co(OH)2 in pure water and in a 0.0120M CoCl₂ solution. You'll find K data in the ALEKS Data tab. Round both of your answers to 2 significant digits. solubility in pure water: 17/0 solubility in 0.0120 M CoCl₂ solution: 0 00 x10 X Ś 010
Consider the following equilibrium: AGCI(s) 2 Ag*(aq) + Cl(aq) Ksp = 1.77x1010 %3D What is the standard Gibbs energy change at 25°C? O -22.1 kJ 55.6 kJ O 1.55 kJ O 139 kJ
Consider a reaction with a large negative Gibbs energy change, as shown below: 42.6 kJ mol-1 Y Z , AG°/ = The reaction is initiated by adding 16 mmol of compound Y into the flask, in the absence of compound Z is present. After 48 hours, analysis reveals the presence of 4 mmol of Z and 12 mmol of Y. Which is the most likely explanation? ▪▪▪▪▪▪ - OY and Z have reached equilibrium concentrations. An enzyme has shifted the equilibrium toward Y. Formation of Z is kinetically slow; equilibrium has not been reached by 48 hours. Formation of Z is thermodynamically unfavorable. Two of the above explanations are reasonable.
Calculate the solubility at 25 °C of Ni(OH)2 in pure water and i na 0.0150M NaOH solution. You'll find K data in the ALEKS Data tab. Round both of your answers to 2 significant digits. solubility in pure water: solubility in 0.0150 M NaOH solution: 0-² x10 X n OXO S olo
PLEASE HELP ASAP!! Thanks
Give detailed Solution with explanation
Estimate the aqueous solubility of AgCl (s) at 303. Use thermodynamic data below. AgCl (s) Ag+ (aq) CI-(aq) ΔΗ (6) | ΔS (max) AS; I -127.0 105.79 -167.1 96.3 73.45 56.6 Express your answer in moles per litre to two significant figures but omit the exponent. For example, if your answer is 1.2x10-10, only write 1.2.
At 25°C only 0.0687 moles of LiCl is soluble in 1.00 L of water. What is the Kp of the salt at this temperature? LICI (s) = Li* (aq) + Cl- (aq) Give your answer to 3 significant figures.
What is the equilibrium constant for the following reaction at 250 C? Mg(s) + Zn2+(aq) <----->Mg2+ + Zn(s) (E0 Zn2+ = -0.76 and Mg2+ = -2.37).
Calculate the solubility at 25 °C of PbCO, in pure water and in a 0.0130M Pb (NO₂), solution. You'll find K, data in the ALEKS Data tab. Round both of your answers to 2 significant digits. solubility in pure water: solubility in 0.0130 M Pb(NO₂) solution: 20 0²- X OxO 8 G dlo Solubility product constants (Ksp) Hg₂(CN)2 H9₂/2 HgS Hg₂SO4 PbBr₂ PbClz PbCO3 PbCrO4 PbF₂ pbl₂ Pb(10₂)2 www.a 5.00x10-40 5.2x10-29 4.00×10-54 6.5x10-7 6.60x10-5 1.70x10-5 7.40x10-14 2.00x 10-14 3.3x10-8 9.8×10-9 3.69x10-13. 78
Calculate K for the following reaction 2 Fe2+ (aq) + Zr (s) ⟶ 2 Fe(s) + Zr4+ (aq) Zr4+(aq) + 4 e- ⟶ Zr(s); Eo = -1.539 VFe2+(aq) + 2 e- ⟶ Fe(s) Eo = -0.447 V Group of answer choices 7.80x1036 2.79x1018 no correct answer 6.08x1073 2.39x107
ST5G.2 - Estimate the solubility of CaF2(aq) [in units of MICROmolar] in the presence of 0.716 molar CaCl2(aq). Type your answer...