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- Activity: Answer completely 2. Decomposition of CaCO3(s) into CaO(s) and CO2(g), ΔHᵒ 25ᵒ = 178 kJIn the redox reaction between [FeBr6] 3− and [V(H2O)6] 4+ one electron is transferred, reducing the Fe center and oxidizing the V center. Write out the complete balanced chemical equation for this reaction if it proceeds by an . . . a. . . . outer-sphere mechanism b. . . . inner-sphere mechanismAt 25 °C, what will favor the forward direction? H2CO3(aq) + 70 kJ ⇄ H2O(l) + CO2(g) a. diluting the system with water b. decreasing the reaction temperature c. adding dry ice (solid CO2) d. increasing the volume of the reaction vessel
- 30 - Which of the following reactions does not occur? A) Zn(s) + CuSO4(aq) ---> (activity: Zn > Cu) B) Pt(s) + AgNO3(aq) ---> C) K(s) + MgCl (aq) ---> D) Cr(s) + HCl(aq) ---> E) Fe(s) + CuSO4(aq) ---> (activity: Fe > Cu)Which of the following reactions will NOT occur spontaneously? a. Cue (aci) + P b (s) —> Cu(s) + P b2+ (aq) b. Sn2+ (aq) + Zn(s) —> Sn(s) + Zn2+ (aq) c. 2K + (aq) + Ca(s) —> 2K (s) + Ca2+ (aq) d. 3H g2+ (aq) + 2A1(s) —> 3H g (s) + 2A13+ (aq)The thermite reaction is 2Al(s) + Fe2O3(s) Al2O3(s) + 2Fe(s) (a) Calculate G for this reaction. (b) Calculate Keq for this reaction. Assume T = 298 K. You may have to do some mathematical manipulations to get your final numerical answer.
- 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).Give typed full explanation not a single word hand written otherwise leave it The value of ΔG° at 25 °C for the oxidation of solid elemental sulfur to gaseous sulfur trioxide, 2S (s, rhombic) + 3O2 (g) → 2SO3 (g) is ________ kJ/mol. A) -740.8 B) +185.2C) +740.8D) -370.4E) +370.4Lithium batteries are used throughout our modern world – in cell phones, laptops, tablets, etc. In fact, if you are regularly recharging your device, it’s highly likely it contains a lithium ion battery. The lithium iron phosphate battery provides stable function over time. The overall reaction for the lithium iron phosphate battery is below: LiFePO4 + 6 C -> LiC6 + FePO4 A certain lithium battery weighs 0.6 g and has a capacity of 2250. mA hr (that is, the cell can store charge equivalent to a current of 2250. mA flowing for 1 hr). What is the capacity of this cell in coulombs? What mass of the reactants is needed to deliver 2250. mA hr? What percentage of the cell mass consists of reactants?
- For the reaction Sm(s) + 2Cu? (aq) -› Sn?*(ag) + 2Cu* (aq) the calculated E° = +0.291V, calculate AG° and K for this reaction. R = 8.314 J/mol•K. 1 F=96485 Coul/mol, 1 V=1 J/Coul.Calculate the equilibrium constant for the following balanced redox reaction (as written) at 25°C. Ernie2+(aq) + BERT (s) → Ernie (s) + BERT2+(aq) Ernie2+(aq) + 2 e– → Ernie (s) E° = –0.13 V BERT2+(aq) + 2 e– → BERT (s) E° = +0.34 V Group of answer choices 7.9 × 1015 8.0 × 10-8 8.9 × 107 7.9 × 108 1.3 × 10–16Which one of the following reactions will occur spontaneously? Group of answer choices Zn+2 (aq) + 2Ag(s) → Zn(s) + 2Ag+ Fe2+(aq) + Ni(s) → Fe(s) + Ni2+(aq) Br2(l) + Sn(s) → 2Br-(aq) + Sn2+(aq) Mn2+(aq) + Sn(s) → Mn(s) + Sn2+(aq) Cr3+(aq) + 3Cu+(aq) → Cr(s) + 3Cu2+(aq)
