Write in your own words the steps and precautions involved in using a pipette to measure out the standard solution. Explain the justifications for each step.
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Write in your own words the steps and precautions involved in using a pipette to measure out the standard solution. Explain the justifications for each step.
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- Give some examples of secondary standard solutions, and give the reason1. An instrument used to measure the acidity or alkalinity of a solution. 2. Chemicals of high purity which are used to standardize a solution 3. Used as standard but have a tendency to lose water from crystallization.K2SO4 in order to prepare a 1 N of the solution. • What are the specifications of primary standard solution?
- Write the materials and how are you going to prepare this solution with step-by-step procedures. 250 mL 20% v/v NH4OH (liquid) solutionWhat is ppm absorptive with units of ppm-1 cm-1 [Fe(SCN)6]3- solution? How to determine it ?500 mL of pure water is first added to 500 mL of 0.500 M K2Cr2O7, making a “standard” solution. What volume of the “standard” solution, when diluted to 500 mL, will be needed to produce another “standard” solution of 0.100 M K2Cr2O7?
- A solution contains 0.350 grams of malonic acid, H2C3H2O4 in 500.0ml.(malonic acid a diprotic acid). What is the molarity of the solution? What is the normality of the solution? What is the % (W/V) of the solution?In no morethan 1000 words. Propose a procedure in preparing a 500 mL 1 M sodium hydroxide solution using the following materials, reagents, glass wares, and instruments. (Show necessary calculations): Materials/Glass wares:• 500 mL beaker• 500 mL volumetric flask• Weigh boat Reagents:• Distilled water• 300 g NaOH pellets Instruments:• Analytical balance.A tablet contains 0.5 g of magnesium hydroxide as the only basic ingredient . The tablet is analysed by dissolving it and titrating with a standard hydrochloric acid solution .The hydrochloric acid solution used in this titration is made by diluting 200 ml of 2M standardised solution to 500 ml 1.Calculate the volume of the HCl solution required to neutralize two of these indigestion tablets dissolved in water to make 35ml solution and calculate the concentration of Cl- in the final solution in mol.dm-3
- . A student was given a solution of unknown molarity of Potassium Hydroxide (KOH). On the lab bench the following chemicals are kept Distilled water, Potassium Hydrogen Phthalate (KHP), HNO3, phenolphthalein and methyl or ange All required glassware is available in the lab. (a). What should be chosen as the standard solution? Justify and explain your answer by giving two properties of substances used to make standard solution. (b). What should be chosen as the indicator for the titration of nitric acid and ammonium hydroxide? Justify your answerlist the apparatus involved in volumetric or titrimetric analysisHow do you calculate the nominal of Na2S2O3 of the solution?