In Lieberman's Test, what should you do to revert the change caused by the addition of water to the blue/green mixture?
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- When acids are added to a solution, the pH should ___________ . a. decrease b. increase c. stay the same d. cannot tell without testingEstimate the pH of a solution prepared by dissolving 1.0 × 10-10 mole of a strong acid in a liter of water at 25°C.How many grams of sodium chloride are needed to make 0.60L of 2.3M sodium chloride solution
- How would you dilute 0.1 M boric acid in 1:10 ratio to 0.01M?If 10g of salt was mixed in 1L water. What percent solution will this be.A. Biuret TestMix 1 mL of sample with 1 mL of 5% NaOH. Add 2 – 3 drops of 1% CuSO4. Question 1: What is the chemical equation of the reaction. Will it give positive reactions to all types of proteins? How about peptides and amino acids? Explain briefly.
- What is the purpose of: A. The concentrated salt solution? B. adding isopropyl alcohol to the solution? Why does it need to be in low temperature?Table salt (sodium chloride) is made up of sodium and chlorine. We are able toeat the compound, showing that it has different properties from those of a metal(sodium) and a poisonous gas (chlorine).20 mL solution is 2 M NaOH. If 0.5 M HCl is to be added to this solution, calculate the pH of the resulting solution: A. when 10 mL of the 0.5 M HCl is added to the original solution of the base (initial pH). B. When 50 mL H20 is added to the original solution of the base.
- Can you explain the various options and how did you come to the answer? How to determine when something is a weak acid or base or strong acid or base? Is there are any trick?An aqueous solution contains 0.448 M dimethylamine ((CH3)2NH).How many mL of 0.240 M hydroiodic acid would have to be added to 150 mL of this solution in order to prepare a buffer with a pH of 10.500? ______________mlUsing a pH meter, you find the pH of an unknown solution to be 8.0 how would u describe this solution
