Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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you would like to remove cadmium ions from a waste stream using precipitation. The final concentration of cadmium needs to be less than 0.001 mg/L. identify a chemical that could be used to precipitate cadmium out of solution to meet this goal. Show calculations and prove if it can be calculated.
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- The concentration of chloride in seawater is 0.55 M and essentially zero in freshwater. Compare the solubility of lead (II) chloride that would result from a spill into freshwater and saltwater environments.arrow_forwardHow can you aid in the dissolution of the potassium hydroxide (KOH)? Gentle heating on the hot plate Placing the beaker in an ice bath Stirring the solution Restarting with new pelletsarrow_forward1a. For each combination of two aqueous solutions, predict whether or not a precipitate (solid product) will form. Put a check mark by those reactions that WILL form a precipitate. options: Na2CO3 and CaCl2 NH4NO3 and SrCl2 KI and PbNO3 KBr and NH4Cl 1b. Kidney stones generally form from the double displacement reaction of two salts that form an insoluble compound, a precipitate. Which of the following salts will react in a double displacement reaction with Na3PO4 to form an insoluble precipitate(s): Potassium chloride (KCl) Potassium carbonate (K2CO3) Magnesium sulfate (MgSO4) Oxalic acid (H2C2O4) Sodium acetate (CH3CO2Na) 1c. Dibasic sodium phosphate dihydrate (Na2HPO4⋅2H2O) is one of the compounds you may consider using. When it is dissolved in water, which ions will be present in significant amounts in solution? Select all that apply. Na2^+ HPO4^-1 HPO4^-2 PO4^-1…arrow_forward
- Complete the table below by deciding whether a precipitate forms when aqueous solutions A and B are mixed. If a precipitate will form, enter its empirical formula in the last column. potassium acetate and ammonium bromide zinc sulfate and sodium sulfide potassium chloride and silver nitratearrow_forwardPlease help with question 5arrow_forwardAnalysis shows the 15.0 L of seawater simulant contains a mercury (II) ion concentration of 3 X 10-4 M. 1.494 grams of potassium iodide will be needed to add to the icefish tank to precipitate out all of the mercury (II) ions. The reaction of mercury (II) ions and potassium iodide is shown below:Hg22+(aq) + 2KI (s) Hg2I2(s) + 2K+(aq) What is the concentration of K+ions (in M) in the crocodile icefish tank after precipitating out all the mercury (II) ions?arrow_forward
- The solubility of an ionic compound in water can be expressed in terms of the mass that will dissolve in a given volume of water, or in terms of the solubility product, Ksp. See Periodic Table If only 0.238 g of Ca(OH)2 dissolves in enough water to give 0.243 L of aqueous solution at a given temperature, what is the Ksp value for calcium hydroxide at this temperature?arrow_forward1. Using the solubility chart, explain whether or not this double replacement reaction will occur. FeSO4 + NaCl -> Na2SO4 + FeCl2 2. In order for a double replacement reaction with precipitate to occur, what must be true. Select all that apply The ion doing the replacing must be more reactice than the ion it replaces Both reactants must be soluble in water Both products must be soluble in water One of the reactants must be insolube in water One of the products must be insoluble in waterarrow_forwardYou have an unknown solution and you want to determine if it contains ammonia. How will you detect its presence in the laboratory analysis? Please provide two ways to analyze its presence and explain your chosen technique in determining the ammonia.arrow_forward
- A 50.0 mL sample of aqueous sodium hydroxide is titrated with 0.425 M sulfuric acid, and 57 mL are required to reach the equivalence point. Write the balanced chemical equation for this reaction. Answer: A 50.0 mL sample of aqueous sodium hydroxide is titrated with 0.425 M sulfuric acid, and 57 mL are required to reach the equivalence point. What is the molarity of the initial sodium hydroxide solution? Hint: You will need the balanced chemical equation you provided as your answer to the previous question. Report your answer to the correct number of significant figures and with the correct units. Answer:arrow_forwardA student is given the following labeled solutions: NaCl, AgNO3, FeCl2, HCI, and KaCo The data was collected and summarized in the following table. The student then receives 5 test tubes labeled A, B, C, D, and E, which contain the five solution above. Data collect after mixing these solutions are given in the second table below. 4. FeCl2 HCI NaCI AGNO, Precipitate Şolution K;CO, Precipitate Gas forms No reaction XXXXX forms K½CO; forms XXXXX Precipitate Precipitate Precipitate Precipitate XXXXX XXXXX AgNO; forms forms forms forms Precipitate No Reaction No reaction XXXXX XXXXX NaCl No reaction forms Precipitate No reaction ХXXXX XXXXX Precipitate No reaction FeCl forms forms Precipitate No reaction No reaction HCI Gas forms XXXXX forms XXXXX Solution A B D A XXXXX No reaction Precipitate Precipitate No reaction XXXXX forms forms B No reaction XXXXX Gas forms Precipitate No reaction XXXXX forms C Precipitate Gas forms Precipitate No reaction XXXXX XXXXX forms forms Precipitate…arrow_forwardWhat happens when potassium iodide is added to a solution of lead nitrate? Potassium nitrate precipitates out. Lead iodide precipitates out. Gaseous lead iodide forms. Nothing - there is no reaction between potassium iodide and lead nitrate.arrow_forward
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