1. Which of the following compounds would be soluble or insoluble? (3 pts)KCIHg2Cl2(NH4)2CO3SolubleCr(NO3)6CaSO4PbCl2Insoluble2. Predict the products and circle P if the reaction is a precipitation or NR for no reaction.(1.5 pts)Sodium carbonate and copper (II) sulfate react to form what products?PNR3. Balance the following reaction: (1 pts)C10H22(g) +O2(l) →_CO2(aq) +H2O(g)4. How many grams of oxygen are present in 0.245 g of potassium sorbate (KC6H7O2)? (2pts)5. a. Oxygen-15 is a positron emitter. Write a balanced nuclear equation for the loss of apositron. (1.5 pts)b. Oxygen-15 is a beta (negatron) emitter. Write a balanced nuclear equation for the loss ofa negatron.b. Oxygen-15 is an alpha emitter. Write a balanced nuclear equation for the loss of an alphaparticle.

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Answered: 1. Which of the following compounds…

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter20: Environmental Chemistry-earth's Environment, Energy, And Sustainability

Section: Chapter Questions

Problem 41PS

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Experiment4: Solubility Product In the experiment to determine the solubility of KI04, in water, the following observations are made at a certain temperature: Volume of saturated KI04 solution taken in the conical flask = 25.0 mL KI added=2g H2SO4 (3.0 M ) added = 20.0 mL. Volume of 0.200M sodium thiosulphate used for titration = 8.00 mL Q1.If the mean ionic activity coefficient, γ± of KIO4 in the saturated solution is 0.85, what is Ksp of KIO4.?
5) The solubility of BaCO3 is 24 mg/L at room temperature. a. What is the molar solubility and the Ksp of barium carbonate? b. The carbonate ion can react with water as follows: CO3² (aq) + H₂O (1) HCO3 (aq) + OH- (aq) Kb = 2.1 x 10-4 Write the reaction out from part a, add the two reactions together, and calculate the new K of the combined reaction. C. Using your K from part b, find the solubility of BaCO3 when the reaction in part b is also considered. Did the solubility increase or decrease from part a? Explain using Le Chatelier's Principle.
e d Balance the following equation (lowest whole number coefficients required) write 1 for one. H3 PO4 + Mg(OH)2, → Mg3(PO4)2 + H₂O Question 17 (4 points) Listen C Which of the following will NOT dissolve in water? с $ A 4 r f V % 5 t g A 6 SAMSUNG Oll b y & 7 O u n *00 8 h j O i m ( 9 k ✓ O ) O ➜ Р ODD DE ?
Over time, as their free fatty acid (FFA) content increases,edible fats and oils become rancid. To measure rancidity, the fator oil is dissolved in ethanol, and any FFA present is titrated withKOH dissolved in ethanol. In a series of tests on olive oil, a stocksolution of 0.050 Methanolic KOH was prepared at 25C, storedat 0C, and then placed in a 100-mL buret to titrate any oleic acid[CH₃(CH₂)₇CH=CH(CH₂)₇COOH] present in the oil. Each offour 10.00-g samples of oil took several minutes to titrate: thefirst required 19.60 mL, the second 19.80 mL, and the third and fourth 20.00 mL of the ethanolic KOH.(a) What is the apparent acidity of each sample, in terms of mass% of oleic acid? (Note:As the ethanolic KOH warms in the bu-ret, its volume increases by a factor of 0.00104/C.)(b) Is the variation in acidity a random or systematic error? Ex-plain.(c) What is the actual acidity? How would you demonstrate this?
7. (8 pts) Calculate the solubility product, Ksp, for SrF2, given that its solubility is 0.0080 g per 225.0 mL of solution. SrF (s)  Sr2 (aq)  2F  (aq) 2
Given are the following reactions: Reaction #1 N2H4(l)+O2(g)⟶N2(g)+2H2O(g) ΔH⊖reaction= -534.2 kJkJ Reaction #2 H2(g)+1/2O2(g)⟶H2O(g) ΔH⊖reaction = -241.8 k a. what is the reversed reactions equation? b. what is delta h of the reversed reaction?
Hydrogen sulfide will react with water as shown in the following reactions.H2S(g) + H2O(l) ⟷⟷ H3O+(aq) + HS–(aq) K1 = 1.0 × 10–7HS–(aq) + H2O(l) ⟷⟷ H3O+(aq) + S2–(aq) K2 =?H2S(g) + 2H2O(l) ⟷⟷ 2H3O+(aq) + S2–(aq) K3 = 1.3 × 10–20What is the value of K2?
3 Bal, (aq)+ 2 Nag POq Caq) 7 BalPO42 + l6 Nal laq • Consider the reaction of 30.0mL of 0.270M Balz with 20.0 mL of 0.3ISM Naz PO4. Lwhat quantity in meles of Balz are preset in the solution? are produced /What quantitg in moles of precipitate E ali Bal were consumed based on the balanced chomical equation? 6) What auantity in males of Na3 Pla aro present in soluction? d) What quantity in moles of precipitate are paduced if all the Naz PO, were cansumed based on the balanced chemi.cal equation? e) which reactant is limisting f What mass (in g) of precipitate is firemed when the limiting reactant is considered?
Gravimetric analysis of Fe3O4 (MW = 232 g/mole) may be undertaken with the following reactions: Fe3O4 → Fe2O3 → Fe (OH)3. Weight of sample containing 8.00% Fe3O4 that must be taken to obtain a precipitate of Fe(OH)3 (MW = 107 g/mole) that weighs 150 mg is . a. 0.108 g b. 0.325 g c. 1.355 g d. 4.065 g Amount of Fe2O3 (MW = 160 g/mole) from which 150 mg of Fe(OH)3 (MW = 107 g/mole) may be obtained is . a. 0.112 g b. 0.224 g c. 0.448 g d. none of the other choices
Vinegar contains ~5 wt% acetic acid. How many grams of vinegar are required to react with 5g of NaHCO3? The density of vinegar is close to 1.0 g/mL. How many mL of vinegar are required to react with 5g of NaHCO3? The reaction of vinegar and sodium bicarbonate is given by the reaction NaHCO3 + CH3COOH → Na+ + CO2 + H2O + CH3COO-
(-57)2 (3.145)3(1:715) 19. At a high temperature, equal concentrations of 0.160 mol/L of H2(g) and I2(g) are initially present in a flask. The H2 and l2 react according to the balanced equation below. H2(g) + I2(g) → 2 HI(g) When equilibrium is reached, the concentration of H2(g) has decreased to 0.036 mol/L. What is the equilibrium constant, Ke, for the reaction? а. 3.4 b. 4.0 С. 12 d. 22 e.) 48
6. (2 pts) Aqueous solutions of a compound did not form precipitates with Cl', Br', I, SO,²', CO;²', PO4³-, OH", or S2-. This highly water-soluble compound produced the foul-smelling gas H2S when the solution was acidified with HCl (aq). This compound is A) Pb(NO3)2 B) (NH4)2S C) KBr D) Li2CO3 E) AgNO3

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