Which one of the following compounds produces 3 mole IONS by dissociation when 1 mole of compound is dissolved in water? a) FeCl3 b) (NH4)3PO4 c)AgNO3 d)LiClO e) Ti(SO4)2
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Which one of the following compounds produces 3 mole IONS by dissociation when 1 mole of compound is dissolved in water?
a) FeCl3
b) (NH4)3PO4
c)AgNO3
d)LiClO
e) Ti(SO4)2
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- You are given four different aqueous solutions and told that they each contain NaOH, Na2CO3, NaHCO3, or a mixture of these solutes. You do some experiments and gather these data about the samples. Sample A: Phenolphthalein is colorless in the solution. Sample B: The sample was titrated with HCl until the pink color of phenolphthalein disappeared, then methyl orange was added. The solution became pink. Methyl orange changes color from pH 3.01 (red) to pH 4.4 (orange). Sample C: Equal volumes of the sample were titrated with standardized acid. Using phenolphthalein as an indicator required 15.26 mL of standardized acid to change the phenolphthalein color. The other sample required 17.90 mL for a color change using methyl orange as the indicator. Sample D: Two equal volumes of the sample were titrated with standardized HCl. Using phenolphthalein as the indicator, it took 15.00 mL of acid to reach the equivalence point; using methyl orange as the indicator required 30.00 mL HCl to achieve neutralization. Identify the solute in each of the solutions.Suppose a pair of chemical compounds A andB can react in two different ways: A+BC Reaction 1 gives product C. A+BD Reaction 2 gives product D. The following facts are known about the two reactions: • Reaction 1 is endothermic and Reaction 2 is exothermic. • If a reaction vessel is charged (illed") with A and B, then at first Cis produced faster than D. Use these facts to sketch a qualitative reaction energy diagram for both reactions. Note: because these sketches are only qualitative, the energies don't have to be exact. They only have to have the right relationship to each other. For example, if one energy is less than another, that fact should be clear in your sketch. Reaction 1 Reaction 2 energy energy reaction coordinate reaction coordinatePrecipitation is the opposite of dissolution. Group of answer choices True False
- 2MnO4−+5H2C2O4+6H+⟶2Mn2++10CO2+8H2O Reaction : Permanganate Ion Reduced by Oxalic Acid If you increase the concentration of oxalic acid in an experiment, what will the molecules and ions be doing? (Simply trying to determine how it will be effected because I don't understand what it would be doing. In the experiment I did, it took longer to notice any changes occur in the color of the test I was doing. )What should happen to the pH of a solution of HClO2(aq) when solid KClO2 is dissolved in it? The pH will decrease because the addition of the salt results in Q > K. The pH will decrease because the addition of the salt results in Q < K. Correct! The pH will increase because the addition of the salt results in Q > K. The pH will increase because the addition of the salt results in Q < K. The pH will not change.Will a precipitate form if 750.00 mL of a 4.0 x 10-3 mol/L solution of Cerium (III) nitrate, Ce(NO3)3(aq), is mixed in a beaker with 300.00 mL of a 2.0 x 10-2 mol/L solution of potassium iodate, KIO3(aq)?The Ksp for Cerium (III) iodiate, Ce(IO3)3 (s), is 1.9 x 10-10. Justify your answer. n:
- Will a precipitate form if 750.00 mL of a 4.0 x 10-3 mol/L solution of Cerium (III) nitrate, Ce(NO3)3(aq), is mixed in a beaker with 300.00 mL of a 2.0 x 10-2 mol/L solution of potassium iodate, KIO3(aq)?The Ksp for Cerium (III) iodiate, Ce(IO3)3 (s), is 1.9 x 10-10. Justify your answer. *There are 6 steps to arrive at the answer. Show all work.Start by writing out a balanced equation for the double displacement equation:The solubility of TICI (thallium(I) chloride), an intermediate formed when thallium is being isolated from ores, is 3.12 grams per liter at 20 °C. What is its solubility product?What change will be caused by addition of a small amount of HCI to a solution containing fluoride ions and hydrogen fluoride? A) The concentration of fluoride ions will increase as will the concentration of hydronium ions B) The concentration of hydrogen fluoride will decrease and the concentration of fluoride ions will increase. *) The fluoride ions will precipitate out of solution as its acid salt. D) The concentration of fluoride ion will decrease and the concentration of hydrogen fluoride will increase. E) The concentration of hydronium ions will increase signiticantly.
- 4. Hemoglobin (Hb) and oxygen gas form a complex (HbO,) that carries oxygen throughout the human body. Unfortunately, carbon monoxide also binds to hemoglobin so that an equilibrium is established. Carbon monoxide poisoning occurs when the concentration of HbO, in the blood is reduced. HbO, + CO HBCO + O2 The first aid for a person suffering from carbon monoxide poisoning is to (1) remove them to an area of fresh air, and (2) administer oxygen. Both of these processes improve the amount of HbO, that is available for the hemoglobin to carry oxygen in the blood. Using the principles of equilibrium, explain how each of these helps to increase the HbO, concentration.(f) Sulfur trioxide reacts with water to form sulfuric acid. Sulfuric acid reacts with metals to form a solution of sulfate salt, for example zinc forming zinc sulfate solution. Explain why a piece of lead stops reacting soon after being added to sulfuric acid even though it can react with sulfuric acid.9. Which of the following materials is Not Soluble ( insoluble ) in water ? a) AgCl c) KCl b) AgNO3 d) (NH4)2CO3
