reaction. oxung H Zn(s) + 2H*(aq) — Zn2+ (aq) + H2(g) Reducing Agent - 2n 10....
Consider the neutralization reaction 2 HNO, (aq) + Ba(OH),(aq) — 2H,O(1) + Ba(NO),(aq) A 0.110 L sample of an unknown HNO, solution required 42.9 mL of 0.200 M Ba(OH), for complete neutralization. What is the concentration of the HNO, solution? concentration: 0.039 Zinc reacts with hydrochloric acid according to the reaction equation shown. Zn(s) + 2 HCl(aq) — ZnCl2(aq) + H,(9) How many milliliters of 5.50 M HCl(aq) are required to react with 2.95 g of an ore containing 43.0%...
In the presence of excess OH-, the Zn2+(aq) ion forms a hydroxide complex ion, Zn(OH)42-. Calculate the concentration of free Zn2+ ion when 1.57×10-2 mol Zn(NO3)2(s) is added to 1.00 L of solution in which [OH- ] is held constant (buffered at pH 12.20). For Zn(OH)42-, Kf = 4.6×1017. [Zn2+]=___M please explain
Consider the neutralization reaction 2 HNO3(aq) + Ba(OH)2 (aq) + 2H,0(1) + Ba(NO3)2(aq) A 0.115 L sample of an unknown HNO, solution required 51.9 mL of 0.100 M Ba(OH), for complete neutralization. What is the concentration of the HNO, solution? concentration:
QUESTION 1 In the redox reaction: Zn(s) + H2SO4(aq) → Zn2SO4(aq) + H2(g), the reducing agent is O H2S04 O Zn2804 O H2 Ozn OH+
Calculate Ho for the following equations: a. Zn(s) + 2H+(aq) Zn2+(aq) + H2(g) b. 2H2S(g) + 3O2(g) 2SO2(g) + 2H2O(g) c. 3Ni(s) + 2NO3-(aq) + 8H+(aq) 3Ni2+(aq) + 2NO(g) + 4H2O(l)
15. The mixing of which pair of reactants will result in a precipitation reaction? CsI(aq) + NaOH(aq) HCl(aq) + Ca(OH)2(aq) K2SO4(aq) + Hg2(NO3)2(aq) NaNO3(aq) + NH4Cl(aq) 16. Which of the following is a precipitation reaction? Zn(s) + 2 AgNO3(aq) 2 Ag(s) + Zn(NO3)2(aq) NaCl(aq) + LiI(aq) NaI(aq) + LiCl(aq) 2 KI(aq) + Hg2(NO3)2(aq) Hg2I2(s) + 2 KNO3(aq) HI(aq) + NaOH(aq) NaI(aq) + H2O(l) None of these are precipitation reactions. 17. Which...
5. Which is the reducing agent in the following redox reaction? CuSO4 + Zn - > Cu + ZnSO. a) CuSO4 b) Zn c) ZnSO4 d) Cu 6. The oxidation number of manganese (Mn) in Mno, is; a) + 8 - 6 - 7 c) + 7 d) -8 7. Which of the following is insoluble in water? a) Ca(NO3) 2 b ) NaSO4 c) NH4Cl d) AgCI 8. What are the spectator ions in the reaction below? Ca(NO3)2 +...
Which substance is the oxidizing agent in the following reaction? Ca(s) + Zn2+1 Zn2+ (aq) 2+ - Ca (aq) + Zn(s) Zn(s) Oca 2t (al O cals) None of the above Zn2+ (aq) The oxidation number for each atom in Gaz(SO4)3 is O +2, +4, -1. 0 1. +3, +4, -1. +2, +4,-2. O 1. +3, +6, -2. The molar solubility of Calcium carbonate is 4.2 x 10-6 M. What is Ksp for this compound 3.0 x 0 x 10-16...
You want to determine AH for the reaction Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g) To do so, you first determine the heat capacity of a calorimeter using the following reaction, whose AH is known: NaOH(aq) + HCl(aq) + NaCl(aq) + H2O(1) -57.32 kJ (a) Calculate the heat capacity of the calorimeter from these data: Amounts used: 50.0 mL of 2.00 M HCl and 50.0 mL of 2.00 M NaOH Initial T of both solutions: 16.9°C Maximum T recorded during...
For a voltaic cell based on the reaction below, which statement is correct? Zn(s)+2H+(aq)→Zn2+(aq)+H2(g) Zn2+(aq) is oxidized at the anode. H+(aq) is reduced at the cathode. Zn2+(aq) is reduced at the anode. H2(g) is the oxidizing agent.