Why is HCl added when preparing a stock solution of 10mM Fe3+? (1.62g of FeCl3 and...
Why is HCl added when preparing a stock solution of 10mM Fe3+? (1.62g of FeCl3 and 2ml of HCL stock solution is mixed and filled up to 1L with distilled water)
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Why is HCl added when preparing a stock solution of 10mM Fe3+?
(1.62g of FeCl3 and...
1. Prepare stock solution of 10mM Fe3+ at a low pH. ( Mix 1.62g of FeCl3 and 2ml HCL stock solution in a volumetric flas...
1. Prepare stock solution of 10mM Fe3+ at a low pH. ( Mix 1.62g of FeCl3 and 2ml HCL stock solution in a volumetric flask and fill up to 1L with distilled water. ) 2. Dilute Fe3+ stock solution 10times, add 50ml of them into an Erlenmeyer flask and after inserting it into the heating mantle, wait for the constant temperature condition to complete. 3. How many grams of H2O2 should be added into 50ml of 10 times diluted Fe3+...
Why is a large excess of Fe3+ added when preparing the standard solution. But you not...
Why is a large excess of Fe3+ added when preparing the standard solution. But you not add a large excess of Fe3+ when preparing the equilibrium solution. Fe^3+ + SCN^- = FeSCN^2+
Why is a large excess of Fe3+ added when preparing the standard solution. Why do you...
Why is a large excess of Fe3+ added when preparing the standard solution. Why do you not add a large excess of Fe3+ when preparing the equilibrium solution. Fe^3+ + SCN^- = FeSCN^2+?
buffer is HC2H3O2/NaC2H3O2 difference in PH: big change when added to buffer. small change when added...
buffer is HC2H3O2/NaC2H3O2
difference in PH: big change when added to buffer. small
change when added to water. why?
why such a bug change when you add an acud or base to water
but not to butfer?
1. a) Describe the difference in observed pH changes upon adding a small amount of strong acid or base to 25.0 mL of water vs to 25.0 mL of your buffer. b) Explain why there was a difference. 6.0M HC,H,O, is corrosive. Prevent...
When HCl is added to a solution containing PbCl2 (s) its solubility decreases, while when added...
When HCl is added to a solution containing PbCl2 (s) its solubility decreases, while when added to PbF2 (s) its solubility increases. Explain why?
A solution was known to contain both Ag1+ ions and Fe3+ ions? Which of the following could be added to separate them in...
A solution was known to contain both Ag1+ ions and Fe3+ ions? Which of the following could be added to separate them in such a way that one ion would end up in a precipitate, while the other remained in solution. Group of answer choices K2CrO4 HCl NH4OH H2O
21. 50.0 cm of 1.00 mol dm hydrochloric acid solution, HCl(aq) was added to a piece...
21. 50.0 cm of 1.00 mol dm hydrochloric acid solution, HCl(aq) was added to a piece of pure marble, CaCO3 with a mass of 1.926 g. After all the marble had reacted the resulting solution was put into a 100 cm volumetric flask and the volume made up to the mark with distilled water. 10.0 cm of this solution was then titrated with 1.00 x 10 moldmºsodium hydroxide solution, NaOH(aq).Calculate the volume of the sodium hydroxide solution required to neutralize...
why does a precipitate form when a drop of 0.6 M HCL is added to a...
why does a precipitate form when a drop of 0.6 M HCL is added to a solution of 0.1 M potassium iodide and 0.2 M potassium iodate?
Determine the pH of a solution when 25.7 mL of 0.13 M HNO3 is mixed with...
Determine the pH of a solution when 25.7 mL of 0.13 M HNO3 is mixed with 20.5 mL of: A) 0.100 M NaOH B) Distilled water C) .060M HClD).300M KOH
Q1: What is the molarity of HCl in a solution if it is prepared when 4.85...
Q1: What is the molarity of HCl in a solution if it is prepared when 4.85 mL of 7.85 M HCl is mixed with 7.88 mL of water? Q2: Determine the volume of water in mL needed to prepare 5.0mL (V2) of a 0.5 M (M2) HCl solution using 7.1 M (M1) HCl (M1). Q3: Determine the volume (V1) of 5.5 M (M1) HCl in mL needed to prepare 5.0 mL (V2) of 0.9 M (M2) HCl solution.
buffer is HC2H3O2/NaC2H3O2
difference in PH: big change when added to buffer. small
change when added to water. why?
why such a bug change when you add an acud or base to water
but not to butfer?
1. a) Describe the difference in observed pH changes upon adding a small amount of strong acid or base to 25.0 mL of water vs to 25.0 mL of your buffer. b) Explain why there was a difference. 6.0M HC,H,O, is corrosive. Prevent...
21. 50.0 cm of 1.00 mol dm hydrochloric acid solution, HCl(aq) was added to a piece of pure marble, CaCO3 with a mass of 1.926 g. After all the marble had reacted the resulting solution was put into a 100 cm volumetric flask and the volume made up to the mark with distilled water. 10.0 cm of this solution was then titrated with 1.00 x 10 moldmºsodium hydroxide solution, NaOH(aq).Calculate the volume of the sodium hydroxide solution required to neutralize...
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