3 SiO2(s) + 4 Al(l) -----> 3 Si(s) + 2 Al2O3(s)
G0 = G0Products - G0reactants
= [0 +(2*-1581.97)] - [ 3*-856.67+4*6.61]
= -620.37 KJ
Yes, pure Al will reduce SiO2.
3 SiO2(s) + 4 Al(l) -----> 3 Si(s) + 2 Al2O3(s)
Calculate the DeltaGdegree for the reduction of SiO_2(s) by Al(l) at 1573K. Would pure Al reduce...
no ksp or kf was given. 4. Calculate the mass of AgaCOs(s) that will dissolve in 5.00 L of a. Pure water. 0.500 M NazS20s, given that the [Ag(S:0)-1 ion forms under these conditions. b. A 0.0500 M (total concentration) bicarbonate/carbonate buffer at pH 10.25. c. 4. Calculate the mass of AgaCOs(s) that will dissolve in 5.00 L of a. Pure water. 0.500 M NazS20s, given that the [Ag(S:0)-1 ion forms under these conditions. b. A 0.0500 M (total concentration)...
consider the following standard reduction potentials. Reduction Half-Reaction Eo (volts) Al3+(aq) + 3e− → Al(s) − 1.66 Fe2+(aq) + 2e− → Fe(s) − 0.44 Sn2+(aq) + 2e− → Sn(s) − 0.14 The Al/Al3+ half-reaction can be paired with the other two to produce voltaic cells because ________ A) Al is a more powerful oxidizing agent B) Fe and Sn are readily oxidized Al is a more powerful reducing agent C) Al3+ is a more powerful oxidizing agent D) Al3+...
Use standard reduction potentials to calculate the equilibrium constant for the reaction: I2(s) + Hg(l)2I-(aq) + Hg2+(aq) Hint: Carry at least 5 significant figures during intermediate calculations to avoid round off error when taking the antilogarithm. a.) Find the equilibrium constant b.) G° for this reaction would be greater/less than zero.
(R)-(+)-Alpine-Borane (Midland Reduction) will reduce acetophenone stereoselectively: (R)-(+)- Alpine-Borane Major Product 1) Please draw the major product for this reaction (take into account stereoselectivity) 2) Please draw both transition states, the favoured and the disfavoured and briefly 3) Which prochiral face of the ketone has been approached by the hydride (si or re) and (1 mark) comment on the reasons why they differ energetically (4 marks) which configuration does the alcohol obtained have (S or R)? (2 marks) (R)-(+)-Alpine-Borane (Midland...
The standard reduction potential for Al3+ to Al is ?°red = −1.662 ? and the standard reduction potential for Co2+ to Co is ?°red = −0.277. Given this information calculate the maximum amount of work, in kJ/mol rxn for the balanced redox reaction from 2Al(s)+3Co2+(aq)----> 2Al3+(aq)+3Co(s) (T = 25.0 °C). Is this a spontaneous reaction? why or why not
Calculate the standard-state entropy for the following reaction: 1 Al2O3(s) + 3 H2(g) ? 2 Al(s) + 3 H2O(l) (If applicable, coefficients of one have been included for clarity.) The standard entropy values are given in the table. S? J/(K?mol) Al(s) 28.0 H2O(l) 189 Al2O3(s) 51.0 H2(g) 131
Calculate the standard-state entropy for the following reaction: 1 Al2O3(s) + 3 H2(g) ⟶ 2 Al(s) + 3 H2O(l) (If applicable, coefficients of one have been included for clarity.) The standard entropy values are given in the table. Formula S∘ J/(K⋅mol) Al(s) 28.0 H2O(l) 189 Al2O3(s) 51.0 H2(g) 131
E. What minimum value of capacitor would be required to reduce the output P-P ripple to ..s volts? = 120v LOAD oe t L 60hz E. What minimum value of capacitor would be required to reduce the output P-P ripple to ..s volts? = 120v LOAD oe t L 60hz
The solid rocket boosters of the space shuttle employed the following oxidation/reduction reaction: 10 Al (s) +6NH4CLO4 (s) --> 4Al2O3 (s) +2AlCl3 (s) + 12 H2o (g) + 3N2 (g) ?Hf 0 for NH4ClO4= -295.3 KJ/mol Al=0 KJ/mol Al2O3= -1676 KJ/mol AlCl3= -704.2 KJ/mol H2O= -241.82 KJ/mol N2= 0 KJ/mol Calculate the standard enthalpy of this reaction. How much energy is released when 100,000 kg of ammonium perchlorate (and excess aluminum) is burned?
Two standard reduction potentials are given below. Cd2+(aq) + 2 e− → Cd(s) E⁰red = −0.403 V Al3+(aq) + 3 e− → Al(s) E⁰red = −1.662 V There is only ONE submission for each part. (a) Which is a stronger reducing agent, Cd(s) or Al(s)? Cd(s) Al(s) (b) Which is the most difficult to oxidize, Cd(s) or Al(s)? Cd(s) Al(s) (c) Is Cd(s) able to reduce Al3+(aq) in a spontaneous reaction? is able is not able (d) Is Al(s) able...