M To begin with concentration I have choose three volumes form my results table which I have added them and then divided by three to get an average results. Describe the stages you followed in collecting the primary data and any secondary data. Titration Steps: • Firstly we weighed the solid sample of sodium hydrogen carbonate with an accurate balance; then dissolved in distilled water up to 250ml to make a
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of today’s experiment is to learn about the concepts of the rate of chemical reactions and homogenous catalysis. Broad Overview of the Experimental Method: The purpose of the first part of today’s experiment will be accomplished by performing titrations. A solution with C2O4- of known concentration will be titrated with MnO4-. The second purpose will be accomplished by: timing and observing the reaction that takes place in a tartrate-H2O solution when the solution has Co2+ added as a catalyst.
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Determination of Percent Potassium & Percent Iron in an Iron Oxalate Salt by Ion Exchange Introduction: This experiment involves determining both the percent potassium (K) and iron (Fe) in a single titration after passing a solution containing a known mass of complex salt through an ion exchange column. Ion Exchange: Certain materials called ion exchange resins consist of rather large molecules which contain ions that can be displaced. The resins are solids‚ insoluble in water‚ usually granular
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Standardization of a NaOH Solution with Potassium Hydrogen Phthlate (KHP) Name:________________________________________________________________ Period:_____ Prelab 1. A 0.8234-g sample of "KHP" required 38.76 mL of NaOH for titration to the phenolphthalein endpoint. What is the exact molarity of the NaOH solution? 2. A 25.00-mL aliquot of an unstandardized HCl solution is titrated with the previously standardized NaOH solution from #1 above. If 32.55 mL of NaOH titrant
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Title: Preparation and Standardization of a Sodium Hydroxide Solution Objective/Purpose: The objective of this experiment will be the standardization of sodium hydroxide using potassium hydrogen phthalate by the titration method. Introduction: The concentration of solutions can be reported in terms of molarity and normality. Molarity is equal to: HCL‚ HBR‚ H2SO4‚ HNO3 M = mol Solute (mol) (Monoprotic) (Diprotic) _______________ V(L)g solutions (L)
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Purpose: The purpose of this experiment is to analyze four drinking water samples from different places using four of the standard drinking water tests required by the EPA. The experiment will be performed by a four person group‚ with each person providing a different water sample. The four tests to be performed are: pH‚ conductivity‚ phenolphthalein and total alkalinity‚ and total and non-carbonate hardness. Data from these four tests will be gathered and analyzed‚ drawing conclusions “about
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PLF: Cesar Rodriguez E-mail: ucla.cesar@gmail.com Midterm Review Session Chemistry 14BL Midterm Review Session *The information shown below is usually provided on the exam. Also‚ remember that calculators can be used on the exam.* Absolute Uncertainties 5.00 mL pipet: ± 0.01 mL 10.00 mL pipet: ± 0.02 mL Digital balance: ± 0.2 mg 50.00 mL volumetric flask: ± 0.04 mL 100.00 mL volumetric flask: ± 0.08 mL 25.00 mL buret: ± 0.03 mL Useful information pX = -logX pH = 14 – pOH Kw
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by titrating with a known concentration of I2(aq) using freshly prepared starch solution as the indicator. SO32-(aq) + 2H+(aq) SO2(aq) + H2O(l) SO2(aq) + I2(aq) + 2H2O(l) 2HI(aq) + H2SO4(aq) Amount of available SO2 = amount of I2 used for titration Reagents and apparatus ******************** Precautions ******************** Procedure 1. The volume of wine present in the bottle stated in the label was recorded. 2. 25 cm3 of white wine was transferred into a 250 cm3 conical flask. 3
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- EXPERIMENT 1 Quantitative Analysis by Acid-Base Titration - A Determination of the Quantity of Aspirin in Powdered Tablets Aims In this experiment a solution of sodium hydroxide will be standardised using potassium hydrogen pthalate. This standardised sodium hydroxide solution will then be used to titrate powdered aspirin tablets. The percentage of aspirin in the powder tablets will then be calculated. Introduction Acid-base titrations are an example of what is called volumetric analysis
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solution. This type of titration is an example of a redox titration. PROCEDURE: (A) Preparation of Solution ‘X’ 1. Weigh 6g of brand ‘X’ of iron tablets 2. Dissolve in 100cm3 of 1.0 moldm-3 H2SO4(aq) in a conical flask. When necessary‚ gently warm the flask over the Bunsen burner. DO NOT BOIL THE MIXTURE. 3. Filter any solid. 4. Transfer any filtrate to a 250cm3 volumetric flask. Fill the solution up to the mark with distilled water. Label as solution X. (B) Titration of Solution X with Potassium
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