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Will a precipitate of Cd(OH)2 form if 1.0 mL of 1.0 M Cd(NO3)2 is added to 1.0 L of 5.0 M NH3?
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- To a beaker with 500 mL of water are added 95 mg of Ba(NO3)2, 95 mg of Ca(NO3)2, and 100.0 mg of Na2CO3. After equilibrium is established, will there be • no precipitate? • a precipitate of BaCO3 only? • a precipitate of CaCO3 only? • a precipitate of both CaCO3 and BaCO3? Assume that the volume of the solution is still 500.0 mL after the addition of the salts.arrow_forwardHydrogen iodide gas decomposes to hydrogen gas and iodine gas: 2HI(g)H2(g)+I2(g)To determine the equilibrium constant of the system, identical one-liter glass bulbs are filled with 3.20 g of HI and maintained at a certain temperature. Each bulb is periodically opened and analyzed for iodine formation by titration with sodium thiosulfate, Na2S2O3. I2(aq)+2S2O32(aq)S4O62(aq)+2 I(aq)It is determined that when equilibrium is reached, 37.0 mL of 0.200 M Na2S2O3 is required to titrate the iodine. What is K at the temperature of the experiment?arrow_forwardThe concentration of barium in a saturated solution of barium sulfate at a particular temperature is 1.2 g/mL. Calculate Ksp at this temperature.arrow_forward
- When 250 mg of SrF2, strontium fluoride, is added to 1.00 L of water, the salt dissolves to a very small extent. SrF2(s)Sr2+(aq)+2F(aq) At equilibrium, the concentration of Sr2+ is found to be 1.03 103 M. What is the value of Ksp for SrF2?arrow_forwardFor each of the following insoluble salts, (1) write a balanced equation showing the equilibrium occurring when the salt is added to water, and (2) write the Ksp expression. (a) AgCN (b) NiCO3 (c) AuBr3arrow_forwardIn each of the following cases indicate what will happen if the indicated chemical is added to a saturated solution of AgOH. More AgOH will dissolve, more ABOH will precipitate, or there will be no change in the concentration of AgOH in the solution. In each case give a clear chemical explanation for your answer. HNO3 CuCl2 NaOH NH3 NAČNarrow_forward
- 7. A common buffer solution can be prepared by using ammonia and ammonium salts. The base equilibrium constant of ammonia, NH3, is 1.815x10-5 A student worker is asked to prepare a buffer solution with NH3 and ammonium salt. However, after the student did a thorough search, no ammonium salt is found. After the student reported the result to the professor, the professor told the student the buffer can be prepared with ammonia and a strong acid. Can you help this student out? The pH of the buffer to be prepared is 10.08. The molarity of the ammonia in the buffer is 0.4717 M. The molarity of the ammonia solution found in the laboratory is 1.201 M, the strong acid solution is 0.9948 M HNO3. The volume of the buffer solution to be prepared is 500.0 mL. Please answer the following questions. A. B. What is the molarity of the ammonium ion in the buffer? Please provider your answer below. Check answer How many mL of 0.9948 M HNO3 solution is needed? Please provider your answer below. 0² 0₂ $…arrow_forwardComplete the following solubility constant expression for BaSO4. K sp = 0 X 90 010 5arrow_forwardComplete the following solubility constant expression for PbCrO 4. K sp = 0 X Śarrow_forward
- 15.0 mL of 0.50 M NaOH is added to a 100.-mL sample of 0.487 M NH3 (Kb for NH3 = 1.8 × 10–5). What is the equilibrium concentration of NH4+ ions? Group of answer choices 1.1 × 10–2 M 7.6 × 10–6 M 4.2 × 10–1 M 1.2 × 10–4 M none of thesearrow_forwardIn an experiment, the following reagent solutions were mixed to reach chemical equilibrium. 0.2 M Fe(NO3)3 in 0.50M HNO3 0.50M HNO3 2.0 x 10–2 M KSCN in 0.50M HNO3 1.1 mL 1.3 mL 6 mL Assuming potassium thiocyanate completely dissociates in aqueous solution, find the Initial Concentrations of SCN- in the reaction mixture?arrow_forwardFor the Equilibrium Reaction: Na++ Cl-= NaCl When adding Saturated NaCl+ 12 M HCl What stress is applied? What is the direction of the shift? When adding Saturated NaCl+ 3M HCl What is the stress applied? What direction is the shift?arrow_forward
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