Ka> Kb acidic solution 3. USE TABLE 2 K2HPO4 HPO4 + H2O double arrow H2PO4 + OH HPO4 + H2O PO4 + H3O 4. Take equations from #3‚ write the Ka and Kb Ka for HPO4 = 4.2 x 10^-13 Kb for HPO4 = 1.6 x 10^-7 Follow-Up Questions: 1. KNO3 will keep plants happy in soil due to its ability neutralize the soil. 2. Trisodium phosphate (TSP)‚ available at most hardware stores in white powder form‚ is a cleaning agent and degreaser that is a base‚ making it a great for clean up. Solutions
Premium Acetic acid Oxygen Ethanol
compounds is soluble or insoluble in water. a. MgBr2 d. Sr(OH)2 b. PbI2 e. ZnSO4 c. (NH4)2CO3 5. (Brown 4.20 w/ additional) Predict whether each of the following compounds is soluble in water: a. AgI f. Sr(NO3)2 b. Na2CO3 g. CuSO4 c. BaCl2 h. CuCl2 d. Al(OH)3 g. PbS e. Zn(CH3COO)2 6. Complete the following double replacement (exchange ) reactions. Be sure to balance them. a. MgCl2 + Ba(NO3)2 → b. Al2(CrO4)3 + (NH4)2SO4 → c. K2SO4 + SrCl2 → d. FeCl3
Premium Hydrochloric acid Acetic acid Sulfuric acid
SCN- are neon yellow and colorless respectively. The color of the product FeSCN2+ however is blood red. In five test tubes‚ one will be the control and four will be the experiments. In the four experiment test tubes‚ we will put Fe(NO3)3‚ KSCN‚ KNO3 and water among the equilibrium of Ferric thiocyanate complex ion
Premium Chemical reaction Chemistry Chemical equilibrium
Purpose: To find out the percent yield of copper in the reaction between copper sulfate (CuSO4) and Iron (Fe). Materials: Balance 100-mL beaker 250-mL beaker Bunsen burner Copper sulfate crystals Glass stirring rod 100-mL graduated cylinder Iron filings Ring stand and ring Wire gauze Procedure: 1. Record mass of clean 100-mL beaker. 2. Add 8.0 grams of copper sulfate crystals to beaker. 3. Add 50.0 milliliters of distilled water to the crystals. 4. Put wire gauze on ring on ring
Premium Copper Water Sulfuric acid
Version 017 – Exam 1 – Laude – (52455) This print-out should have 30 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 1 003 6.0 points What would be pH of a 1 M solution of a very expensive weak base‚ unobtainamine‚ whose pKb is 3.4? 6.0 points 1. 12.3 correct Consider a reaction with ∆Hrxn = 997 kJ · mol−1 . Which of the following pairs of K values and temperatures is possible for this reaction? 1. K1 =
Premium Pressure Chemical equilibrium
drops of Potassium chloride into tube 8. Last‚ drop a strip of magnesium metal into tubes 6‚ 7‚ and 8. VI. Data: Zinc Copper Magnesium Lead nitrate / Pb(NO3)2 (results) (results) _ Silver nitrate / AgNO3 _ (results) _ Copper sulfate / CuSO4 (results) _ _ Magnesium chloride / MgCl2 (results) _ _ Zinc chloride / ZnCl2 _ _ (results) Sodium chloride / NaCl _ _ (results) Potassium chloride / KCl _ _ (results) VII. Discussion: VIII. VIII. Conclusion: The hypothesis was proven. (restate
Premium Zinc Metal Copper
ions in a solution can be found by reaction with an excess of aqueous iodide ions to produce iodine. The amount of iodine formed can be found by titration with thiosulfate ions‚ S2O32–. For Examiner’s Use FB 1 is aqueous copper(II) sulfate‚ CuSO4. FB 2 is 0.100 mol dm–3 sodium thiosulfate‚ Na2S2O3. FB 3 is aqueous potassium iodide‚ KI. starch indicator Read through the instructions carefully before starting any practical work.
Premium Zinc Solubility Titration
signed. There were three specific results to the lab. After completing the lab one found the percent of water in the hydrate. The percent water came out to be 36.7%. One then proceeded to calculate the empirical formula. The empirical formula was CuSO4 * 5H2O. Lastly‚ one found the percent error of the lab. The percent error was
Premium Water
indicators.The following observations were made: NaHCO3 and HCI – CO2 HCI and BTB NH3 and BTB HCI and blue dye Blue dye and NaOCI NaOCI and KI KI and Pb(NO3)2 NaOH and phenolphthalein HCI and phenolphthalein NaOH and AgNO3 AgNO3 and NH3 NH3 and CuSO4 Data Tables: Data Table 1: ReactionsReaction Question/WellNumberA/H12 Chemicals NaHCO3 and HCI - CO2 When I added the hydrochloric acid to the sodium bicarbonate it began to bubble and fizz almostimmediately. This solution
Premium Chemistry Acid Sodium bicarbonate
THE MOLE CONCEPT References : Mohammed and Lambert ( Old Edition) Chapter 11 pg. 107 Mohammed and Lambert ( New edition) Chapter 8 pg 123 Anne Tindale Chapter 10 pg 46 The following topics will be covered : 1. Definition of Relative Atomic and Relative Molecular Masses. 2. Calculation of Relative Molecular Masses 3. Converting Moles to Grams / Grams to Moles 4. Calculation from equations Masses of substances /Volumes of gases / Concentration
Premium Chlorine Sodium hydroxide Oxygen