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What is the function of the phenanthroline solution that is added to the unknown iron solution?
Asuruj
phenanthroline is used as a redox indicator
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∙ 10y ago
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An unknown substance is added to a solution and the pH increases The substance is best described as what?
The unknown substance would have to be a basic solution. At least more basic than the initial solution. The pH scale ranges from 0,Most acidic, to 14, Most Basic. If the pH of your solution increases when the unknown substance is added, then it would lead you to believe that the added substance is of a basic nature.
What is the purpose of the hydroxylamine solution that is added to the unknown solution in the iron analysis?
hydroxylamine is a reagent that helps reduce iron
Why ammonium oxalate is added in calcium carbonte solution?
ammonium oxalate is added to calcium carbonate because in the reaction between the two a crystal is formed that contain the Ca+2 ion. This is useful because if you have a sample of sodium carbonate with an unknown molarity you can use the oxalate to extract this calcium and determine what the molarity of the unknown solution was
What is a pH curve?
a plot showing the pH of a solution being analyzed as a function of the amount of titrant added
which of the following best describes a solution that contains a buffer?
sodium hydroxide, a base, is added to the solution, but the pH of the solution does not change.
What is the function of the phenanthroline solution that is added to the unknown iron?
phenanthroline is used as a redox indicator
An unknown substance is added to a solution and the pH increases The substance is best described as what?
The unknown substance would have to be a basic solution. At least more basic than the initial solution. The pH scale ranges from 0,Most acidic, to 14, Most Basic. If the pH of your solution increases when the unknown substance is added, then it would lead you to believe that the added substance is of a basic nature.
When HCl is added to the unknown solution bubble form what is the compound in the colorless solution?
dilute hydrochloric acid
What is the purpose of the hydroxylamine solution that is added to the unknown solution in the iron analysis?
hydroxylamine is a reagent that helps reduce iron
How will Phenolphthalein help you test for unknown substances?
phenolphthalein turns pink when basic solution is added to it but remains colorless in case of neutral and acidic solution
Why ammonium oxalate is added in calcium carbonte solution?
ammonium oxalate is added to calcium carbonate because in the reaction between the two a crystal is formed that contain the Ca+2 ion. This is useful because if you have a sample of sodium carbonate with an unknown molarity you can use the oxalate to extract this calcium and determine what the molarity of the unknown solution was
What is a pH curve?
a plot showing the pH of a solution being analyzed as a function of the amount of titrant added
How do you determine the pka value of naphthalene?
Use a method called titration, where a known concentration of either a strong acid (to measure a weak base) or a strong base (to measure a weak acid) is slowly added to a solution of the unknown compound. By measuring the pH of the solution as you do the titration, and by measuring the volume of the known solution that you added to the unknown, you can determine the pKa of the unknown compound.For complete instructions on how a titration is performed, see the Web Links to the left of this answer.how can i determine pka value if pH is given?
When biuret reagent is added to an unknown colorless solution the solution turns light purple. this indicates the presence of which molecules?
process that release energy by breaking down food molecules in the presence of oxygen
which of the following best describes a solution that contains a buffer?
sodium hydroxide, a base, is added to the solution, but the pH of the solution does not change.
What is bromine and carbon tetrachloride?
Bromine in carbon tetrachloride is a brown-colored solution and used as a chemical test. When drops of bromine/carbon tetrachloride are added to a solution containing an unknown compound and the brown-colored bromine solution disappears, that means that the unknown compound contains carbon-carbon double bonds (since it absorbed the bromine solution). On the other hand, if the brown-colored bromine solution doesn't disappear then it means that no carbon double bonds are present. This is called a "Bromine Test."
Why is Ammonia solution added while preparing EDTA solution?
ammonia solution is added during the preparation of EDTA solution to increase the rate of dissolution of its disodium salt.
