"The following reaction begins with only the reactants present. The [H2] initially is 0.6100 M, [12] initially is 0.3600 M, and the k is 6.778x 10 -5. What is the equilibrium concentration of HI? H2(g) + 2 (g) 2HI (g)" 8.873x10-3 M 1.488x10-5 M 3.858x10-3 M 6.559x10-3 M 3.086x10-3 M
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- The concentration of EDTA titer solution is equal to 1.2 mg CaCO3 per/ mL EDTA. What is the Molar concentration of EDTA (MEDTA)? Choices: 0.12 M, 0.0012 M, 0.012 M, 1.2 M, 0.00012 MBlood will not clot if calcium ions are removed from its plasma. Some blood collection tubes contain salts of the oxalate ion, C2 O4 2−, for this purpose (as shown). At sufficiently high concentrations, the calcium and oxalate ions form solid, CaC2O4∙H2O (which also contains water bound in the solid). Theconcentration of Ca2+ in a sample of blood serum is 2.2 × 10–3 M. What concentration of C2 O4 2− ion must be established before CaC2O4∙H2O begins to precipitate?Answer the following questions regarding concentration: What concentration of ClO−3ClO3− results when 645 mL645 mL of 0.355 M AgClO30.355 M AgClO3 is mixed with 759 mL759 mL of 0.549 M Mn(ClO3)2? A 73.0 mL73.0 mL portion of a 1.30 M1.30 M solution is diluted to a total volume of 208 mL.208 mL. A 104 mL104 mL portion of that solution is diluted by adding 169 mL169 mL of water. What is the final concentration? Assume the volumes are additive.
- Silver chloride is virtually insoluble in water so that the reaction appears to go to completion. How many grams of solid NaCl must be added to 25.0 mL of 0.149 M AgNO3 solution to completely precipitate the silver? Question 4 options: a) 6.37 × 10-5 b) 0.0637 c) 3.73 × 10-3 d) 0.21812.Which of the following would be the reason the following reaction occurs? Mg + Zn(NO33)22 --> Zn + Mg(NO33)2 A.Because Zn is higher of the activity series B.Because Mg is higher on the activity series C.Because all nitrate ions are soluble D.Because all nitrate ions are insolubleComplete the changes in concentrations for each of the following reactions:(a) 2SO2(g) + O2(g) ⇌ 2SO3(g) _____ x _____(b) C4 H8(g) ⇌ 2C2 H4(g) _____ −2x(c) 4NH3(g) + 7H2 O(g) ⇌ 4NO2(g) + 6H2 O(g) _____ _____ _____ _____
- 1. What is the balanced net ionic equation for the equilibrium involving the solutbility o Mg (OH)2? 2. When heating the mixture it had no color and the reaction was declared endothermic. Is the forward reaction endothermic or exothermic and why? What is the balanced net ionic equation when heat is included? 3. Most solids are more soluable in warm water than cold water. Does the soluability of Mg (OH)2 fit this pattern? Why?Select all the true statements from the following. Question 7 options: If KBr solutions with concentrations of 0.20 M and 0.40 M are mixed, the resulting solution might have concentration lower than 0.20 M. 0.25 L of a 0.10 M solution of NaCl contains 0.025 moles of NaCl. A salt is an ionic compound that can be produced by the reaction of an acid and a base. In order to make 100 mL of a 0.10 M solution of hydroiodic acid from 0.5 M solution, it would be best to use a serial dilution process.. What is the special name given to the equilibrium constant for the dissolving of an ionic solute in water?
- 8.Iron fluoride (FeF2) dissociates according to the following equation: FeF2(s) ⇌ Fe2+(aq) + 2F–(aq) If the [Fe2+] in a saturated solution is measured to be 2.05 × 10–4 mol/L, what is the concentration of fluoride (F–) ions in a saturated solution? a,.1.03 × 10–8 mol/L b.4.10 × 10–4 mol/L c.4.20 × 10–8 mol/L d.2.05 × 10–4 mol/LIn the following chemical reaction what is the concentrations of [H3O+] in a solution that is 0.00045 M [Al(H2O)6]3+. Assume that the [Al(H2O)6]3+ dissociates 100% completely and assume 1 Liter of solution. [Al(H2O)6]3+ + 3H2O ↔ [Al(H2O)3(OH)3]2+ + 3H3O+Suppose the Kc value for Cobalt (II) hexahydrate is 6.80 and suppose upon heating the solution turned pink. If a group of student started mixed 10.5 mL of a 1.25 M [Co(H2O)6]2+(aq) solution with 12.5 mL of a 1.55 M solution of NaCl(aq) with 15.25 mL of a 1.39 M [CoCl4]-2(aq) solution then what color is the solution at equilibrium? [Co(H2O)6]2+(aq) + 4 Cl-(aq) [CoCl4]-2(aq) + 6 H2O(L) Multiple choices pink purple green black orange brown blue colorless yellow gray red green