Which of the following reactions does NOT proceed spontaneously in the forward direction? a) Fe(II) + Na b) Cu + Ag^(+) c) Zn + Pb^(2+) d) Pb ^(2+) + Cu e) Cu^(2+) + Li
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Which of the following reactions does NOT proceed spontaneously in the forward direction?
a) Fe(II) + Na
b) Cu + Ag^(+)
c) Zn + Pb^(2+)
d) Pb ^(2+) + Cu
e) Cu^(2+) + Li
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- Solid silver iodide, AgI, can be dissolved by adding aqueous sodium cyanide. Calculate Knet for the following reaction: AgI(s) + 2 CN (aq) ~ [Ag(CN)2]- (aq) + I- (aq)Consider the reaction: Ag+ + 2 NH3 = Ag(NH3)2+ What will happen if Cl- is added to this system to precipitate AgCl? [Cl-] decreases [NH3] increases [Ag(NH3)2+] increases [Ag+] increasesa Using the Kp value for Cu(OH)2( 1.6 x 10-10) and the overall formation constant for Cu(NH3)4²+ 1.0 x 1013), calculate the value for the equilibrium constant for the following reaction: Cu(OH)2()+4NH, (aq) Cu(NHs) 2+ (aq) + 20H (aq) K: = 1.6x10^-6 b Use the value of the equilibrium constant you calculated in part a to calculate the solubility (in mol/L) of Cu(OH)2 in 4.8 M NH3. In 4.8 M NH3 the concentration of OH is 0.0093 M. Solubility mol/L
- A sample of impure tin of mass 0.530 gg is dissolved in strong acid to give a solution of Sn2+Sn2+. The solution is then titrated with a 0.0448 molL−1molL−1 solution of NO3−(aq)NO3−(��), which is reduced to NO(g)NO(�). The equivalence point is reached upon the addition of 3.91×10−2 LL of the NO3−(aq)NO3−(��) solution. Part A Find the percent by mass of tin in the original sample, assuming that it contains no other reducing agents.Determine if the following reaction occurs spontaneously in the forward reaction: Ni (s) + Zn2+ (aq) ---> Ni2+ (aq) + Zn (s)93 Chemistry I Laboratory Manual, 2019 Revision Questions: 1o vaislom (E 1) Samples containing iron(II) ion can be titrated with solutions containing dichromate ion under acidic conditions. OcHS Cr20,2- + 6Fe2+ + 14H→ 2Cr³+ + 6FE3+ + 7H2O (a) Which ion is oxidized in this reaction? (b) Which ion is the reducing agent in this reaction? (c) If a 1.924 g sample containing iron(II) sulfate is dissolved and requires 36.1 mL of 0.0100 M K2C12O7 solution to titrate it, what is the percent iron(II) sulfate in the sample? Broxide on KHF HP is a on nt pri
- How many grams of cadmium are deposited from an aqueous solution of cadmium sulfate, CdSO4, when an electric current of 1.70 A flows through the solution for 214 min?Iron concentrations greater than 5.4 × 10–6 M in water used for laundry purposes can cause staining. What [OH–] is required to reduce [Fe2+] to this level by precipitation of Fe(OH)2?Calculate K Ksp 4.27e-13 for silver bromide given the following data. cº = +0.07 V 8° +0.80 V AgBr(s) + e → Ag(s) + Br (aq) Ag+ (aq) + e¯ → Ag(s) X
- MnO4 (aq) + H2O2 (aq) → Mn2+ (aq) + O2 (g) (a) Sketch a flask containing an analyte solution before any potassium permanganate KMnO4 is added, list out all species present. (b) Once a stoichiometric amount of permanganate ion is added to the analyte solution (the equivalence point of the titration!), sketch the beaker with all the species remaining after the reaction goes to completion. (c) Sketch the flask one more time, past the equivalence point. How do you know when you have passed the equivalence point?For the following redox reactions, assume that each ion concentration is 0.10 M. For which reaction is Ecell < E°cell? Cr(s) + Au3+ Cr3+ + Au(s) Mn(s) + 2 K* –→ Mn2+ + 2 K(s) Zn(s) + Pb2+ Zn2+ + Pb(s) 2 Na(s) + Cu2+ 2 Na* + Cu(s)An acidic solution is 9 mM in each of the following metal ions: Sn²+, Co²+, Mn²+, Pb²+. See the Solubility Product Constant Table. (c) At what pH do the metal hydroxides begin to precipitate? Sn(OH)₂ 40 89 x Co(OH)2 49 7.9 Mn(OH)₂ 49 8.4 Pb(OH)2 4.0 5.1 Substance Ksp at 25 °C Aluminum Al(OH)3 Barium Ba(OH)2 5.0 x 10-³ BaCO3 8.1 x 10-⁹ BaSO4 1.1 x 10-10 Ba3(PO4)2 3.4 x 10-23 Cadmium Cd(OH)2 CdCO3 CdS Calcium 1.9 x 10-33 2.5 x 10-14 5.2 x 10-12 8.0 x 10-27 Ca(OH)2 5.5 x 10-6 CaCO3 4.8 x 10-⁹ Ca3(PO4)2 1.0 × 10-26 CaF2 3.9 x 10-11 Chromium Co(OH)₂ Cr(OH)3 6.3 x 10-31 Cobalt 16 x 10-15 ✓ ✓ x Copper Cu(OH)2 Cu₂S CUCO3 CuS Iron Fe(OH)2 FeS Fe(OH)3 FePO4 Lead Pb(OH)2 PbF2 PbCl₂ PbBr₂ Pbl2 PbCrO4 PbSO4 PbS 2.2 x 10-20 1.6 x 10-48 1.4 x 10-10 6.3 x 10-36 8.0 x 10-16 6.3 x 10-18 2.5 x 10-39 9.9 x 10-29 2.8 x 10-16 3.7 x 10-8 1.7 x 10-5 6.3 x 10-6 6.5 x 10-9 1.8 x 10-14 1.7 x 10-8 8.4 x 10-28 Magnesium Manganese Mn(OH)2 MnCO3 MnS Nickel Ni(OH)2 Silver AgCl AgBr Agl AgCN Ag₂S Ag₂ CrO4 Ag3PO4 Tin…