1. Which of the following reaction represents cathode reaction in chrom plating?
a. Cr (s) → Cr6+ (aq) + 6 e¯
b. Cr (s) → Cr3+ (aq) + 3 e¯
c. Cr3+ (aq) + 3 e¯ → Cr (s)
d. Cr (s) → Cr3+ (aq) + 6 e¯
2. The molar solubility of AgBr is 6.3 × 10−7 M. What is its Ksp?
3. Co2+ (aq) + 6 H2O (l) ⇌ Co(H2O)62+ (aq)
the ligand(s) is/are:
a. Co2+
b. Co(H2O)62+
c. H2O
d. OH –
e. H3O+
4.Nitrogen reacts with excess hydrogen to form ammonia; N2 (g) + 3H2 (g) → 2NH3 (g)
Which burns in excess oxygen to form nitrogen oxide
4NH3 (g) + 5O2 (g) → 4NO (g) + 6H2O
How much NO will be produced from 5.0 moles of N2?
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1. Which of the following reaction represents cathode reaction in chrom plating? a. Cr (s) →...
Calculate the ^Ho in (kj) for the following reaction : 4NH3 (s) + 5O2 (g) ---> 4NO (g) + 6H2O (l) ^Ho: NH3 - 46.0 NO 90.0 H2O - 286 A. - 1,172 B. - 1,716 C. - 150 D. - 1,356
For which of the following reactions is AS° > 0. Choose all that apply. CH4(g) + H2O(g) + CO(g) + 3H2(g) 4NH3(g) + 502(g) → 4NO(g) + 6H2O(g) 2CO(g) + O2(g) + 2C02(g) NH4Cl(s) + NH3(g) + HCl(g) 2NH3(g) + 202(g) + N2O(g) + 3H2O(1)
Use the following half-reactions to write 3 spontaneous reactions, calculate E°cell for each reaction, what is the n number (number of electrons transferred). Au+ (aq) + e− → Au (s) E° = 1.69 V N2O (g) + 2H+ (aq) + 2 e− → N2 (g) + H2O (l) E° = 1.77 V Cr3+ (aq) + 3 e− → Cr (s) E° = -0.74 V Question 7 0.36 pts Use the following half-reactions to write 3 spontaneous reactions, calculate Eºcell for...
(1) Which of the following statements is correct for the equation shown here? 4NH3(g) + 5O2(g) ⟶ 4NO(g) + 6H2O(g) (a) 6 g of H2O are produced for every 4 g of NH3 reacted. (b) 1 mole of NO is produced per mole of NH3 reacted. (c) 2 moles of NO are produced for every 3 moles of O2 reacted. (2) Silicon reacts with chromium(III) oxide according to the equation 3Si(s) + 2Cr2O3(s) ⟶ 3SiO2(s) + 4Cr(s) If 59.4 g...
croHissit Song "14. a) Calculate the standard emf and write the overall equation for the cell described as: Croaq) Haq) + (aq) → Craq) + 2/8) + H2O(D Cr₂O7991+ 4H₂011 +36-7 reducing Oxidizing 2 croren + 4H20 (0) +36 --> CrotsstSoH + 5% 3(21 691 -> Izintze-) 0.406 14 7 .0 I BOV overall eqn: 200 2 06112 --> 2010 He(s) tel +3120) emf: 0.106 b) Calculate the emf obtained by this cell (based on part a above) from the...
Calculate the cell potential for the following reaction as written at 25.00 °C, given that [Mg2 ] = 0.774 M and [Sn2 ] = 0.0190 M. Standard reduction potentials can be found here. Reduction Half-Reaction Standard Potential Ered° (V) F2(g) + 2e– → 2F–(aq) +2.87 O3(g) + 2H3O+(aq) + 2e– → O2(g) + 3H2O(l) +2.076 Co3+(aq) + e– → Co2+(aq) +1.92 H2O2(aq) + 2H3O+(aq) + 2e– → 2H2O(l) +1.776 N2O(g) + 2H3O+(aq) + 2e– → N2(g) + 3H2O(l) +1.766 Ce4+(aq) + e– → Ce3+(aq)...
1. How many moles of MgS2O3 are in 225 g of the compound? 2. Determine the empirical formula for a compound that is 64.8% C, 13.6% H, and 21.6% O by mass. 3.A compound is 54.53% C, 9.15% H, and 36.32% O by mass. What is its empirical formula? 4.The Ostwald process is used commercially to produce nitric acid, which is, in turn, used in many modern chemical processes. In the first step of the Ostwald process, ammonia is reacted...
1) What is the correct mathematical expression for the reaction quotient, Qc, for the following reaction: CH(E) + 2O2(g) = CO2(g) + 2H20 (1) [CH][02] [CO2][H2012 [CH][02] [CO2] L = LIQUID (CO2) [CH][0212 (d) 1C02) P2012 [CH][02] e) None of the above. 2) A change of pressure has no effect on which of the following reactions at equilibrium? 1) 2502(g) + O2(g) = 2503(8) 2) 4NH3(g) +502(g) = 4NO(g) + 6H2O(g) 3) CH2(g) + Cl2(g) = CH2Cl(g) + HCl(g) 4)...
Answer the following questions ans please show your calculation. = 24,7 +402.8 = 1 AH,º= -447KJ AH2O= -484KJ AH;O= -429KJ AHRO= HW12 Using the following reactions: A+B+ 2C LA +3D+ 2E 2D+B+ 2F Calculate AH for the process 4E+ 5B → 4C +6F HW13 Using the following reactions: N2(g) + O2(g) → 2NO(g) N2(g) + 3H2(g) + 2NH3(g) 2H2(8) + O2(g) → 2H20(8) Calculate AH for the process 4NH3(g) + 502(8) → 4NO(g) + 6H2O(8) AH =+180.6 kg AH,O= -91.8...
Consider the following reaction at 298 K. 3 Cr3(a) Cr(s)>3 Cr(aq) Cr (aq) Which of the following statements are correct? Choose all that apply. E cell0 The reaction is reactant-favored. n 3 mol electrons Odelta Go0 Consider the following reaction at 298K. 2 Cr3+ (a Zn (s2 Cr2* (aq)+ Zn2* (aq) Which of the following statements are correct? Choose all that apply O K<1 cell 0 Odelta Go0 OThe reaction is product-favored On-5 mol electrons