The scenes below depict three gaseous mixtures in which X (orange) and Y2 (black) are reacting to form XY and Y. Assume that each gas has a partial pressure of 0.10 atm.   (a) If K = 4.5, which mixture is at equilibrium? [a] (b) Rank the mixtures from the most positive ΔG to the most negative ΔG. (example: 123) [b]

Which of the following can be prepared by electrolysis of their aqueous salts: cadmium, gold, sodium, aluminum, bromine, fluorine, nitrate (MTS 7/21/2020)

What substance is produced at the anode during the electrolysis of a mixture of molten strontium iodide, SrI2(l), and molten aluminum chloride, AlCl3(l)? Assume standard conditions. [1] What substance is produced at the cathode during the electrolysis of a mixture of molten strontium iodide, SrI2(l), and molten aluminum chloride, AlCl3(l)? Assume standard conditions. [2] (MTS 7/13/2021)

What substance is produced at the anode during the electrolysis of a mixture of molten sodium chloride, NaCl(l), and molten magnesium bromide, MgBr2(l)? Assume standard conditions. [1] What substance is produced at the cathode during the electrolysis of a mixture of molten sodium chloride, NaCl(l), and molten magnesium bromide, MgBr2(l)? Assume standard conditions. [2] (MTS 7/13/2021)

A metal bromide, MBr2, is converted to a molten form at high temperature. Electrolysis of this sample with a current of 5.00 A for 50.0 seconds results in deposition of 0.0847 g of metal M at the cathode. The other product is bromine gas, Br2(g), which is released at the anode. Determine the identity of metal M.   (MTS 7/21/2020)

Standard reduction potentials are -3.05 V for the Li+(aq)/Li(s) couple, -0.13 V for Pb2+(aq)/Pb(s), -2.93 V for K+(aq)/K(s), -0.81 V for H2O(l)/H2(g), and -2.90 V for Ba2+(aq)/Ba(s). Under standard-state conditions, arrange the reducing agents in order of decreasing strength. [I] > [II] > [III] > [IV] > [V] (MTS 7/11/2021)

A reaction that occurs in the internal combustion engine is N2(g) + O2(g)  ⇌ 2NO(g) ΔH° =  [a] kJ/mol,  ΔS° = [b] J/mol K From what temperature (in K) does the reaction become spontaneous?  Enter a number to 1 decimal place. (MTS 7/21/2020)  

Choose the true statement. (MTS 7/14/2021)  

Calculate the Kf of M(NH3)2 + from M+(aq) + e- ⇋ M(s)  E0= [x] V M(NH3)2+(aq) + e- ⇋ M(s) + 2NH3(aq)  E0= [y] V You may enter as e notation (e.g. 2.34e6 or 4.56e-4) or enter the whole number (132465780).  Canvas will change it to a number. (MTS 7/18/2020)

Balance the following skeleton reaction in acidic solution (if the coefficient is 1, put 1; if the coefficient is 0, put 0) and identify the oxidizing and reducing agents. For the oxidizing and reducing agent, enter numbers and +/- directly for superscripts and subscripts. (eg. enter HCO3- for HCO3-, Cu2+ for Cu2+) H2S (g) + NO3- (aq)     S8 (s) + NO (g) [1]H2S(g) + [2]NO3-(aq) + [3]H+(aq) + [4]H2O(l)  [5]S8(s) + [6]NO(g) + [7]H+(aq) + [8]H2O(l) (acidic)   Oxidizing agent: [9] Reducing agent: [10]