Calculate DS° for the reaction 4Cr(s) + 302(g) ® 2Cr2O3(s).

Hemoglobin, abbreviated Hgb, reacts with a certain oxide, XO, and oxygen gas, 02. Consider the following reactions and approximate standard free energy changes: ΔG° = -70.00 kJ AG° = -93.4 kJ Hgb + 02 = Hgb02 Hgb + XO = HgbXO Using these data, estimate the equilibrium constant value at 25 °C for the following reaction: Hgbo2 + XO = HgbXO + 02 Please make sure to use 4 sig. figs throughout your calculations. Answer: -23.40 The correct answer is: 12634.20

Calculate DS° for the reaction 4Cr(s) + 3O2(g) ® 2Cr2O3(s).

Calculate ΔrG∘Δr�∘ for a redox reaction with n=4�=4 that has an equilibrium constant of K� = 0.044 (at 25 ∘C∘C). Express your answer using two significant figures. Calculate E∘cell�cell∘ for a redox reaction with n=4�=4 that has an equilibrium constant of K� = 0.044 (at 25 ∘C∘C). Express your answer to two significant figures and include the appropriate units.

(H2 ) →(12 ) +( 2HI) (AS = 82.4 J/K ),(AH = 25.9 KJ/K ) %3D %3D Calculate AG for this reaction at 25 C°

Predict the products of the following single replacement reaction and predict whether it will be spontaneous. Fe(s)  +  2AgNO3(aq)  →

What is the spontaneity of the chemical system? Cu(s) + H+(aq) -> Cu2+(aq, 1M) + H2(g) standard state

aqueous solution, and 0.545 g lead (II) bromide A chemist fills a reaction vessel with 0.390 M lead (II) (Pb2+) aqueous solution, 0.591 M bromide (Br) ad (PbBr2) solid at a temperature of 25.0°C. Under these conditions, calculate the reaction free energy AG for the following chemical reaction: Pb2+(aq) + 2Br (aq) = PbBr₂ (s) Use the thermodynamic information in the ALEKS Data tab. Round your answer to the nearest kilojoule. pla 18 Ar

4.

Use the following redox reactions and their corresponding ΔE° values:           Co(s) + Pb2+(aq) ⟶ Co2+(aq) + Pb(s)                  ΔE° = +0.15 V          Zn(s) + Co2+(aq) ⟶ Zn2+(aq) + Co(s)                  ΔE° = +0.48 V  Which one of these chemical species is the strongest oxidizing agent? Group of answer choices Pb2+(aq) Zn(s) Co(s) Insufficient information to answer this question. Co2+(aq)