Why is it important for all of your glassware to be clean and dry before performing...
Why is it important to oven dry or flame dry glassware before setting up a Grignard reagent formation or a Grignard reaction? Organomagnesium reagents react readily with water faster than with the desired starting material, lowering the overall yield Water will make the reaction blow up Wet glassware is slippery Too many salts will form in the reaction
-Why was it so important to keep your glassware dry when synthesizing your Grignard? What happens when your experiment is exposed to water? (Grignard Reaction Experiment)
E8: Post-lab Questions Homework . Due in 3 days 0/4 answered E8 PL 04 Homework – Unanswered Why is it important for all of your glassware to be clean and dry before performing a titration? I Unanswered Sul [ Fullscree
You cleaned your glassware prior to beginning but didn't ensure that it was completely dry and contaminated your reaction with Acetone. What effect would this have on the reaction? Draw any possible byproducts that may result from this contamination.
1. What do volumetric glassware measure? What types of volumetric glassware will you be using in this experiment? 2. What is density? How is it calculated? 3.Define meniscus. State how you use the meniscus in making volumetric measurements. Draw a sketch of a meniscus for water in a graduated cylinder. 4. Define accuracy and precision. Explain what the “reliability of a measurement” means. (These concepts can be found in Chapter 1 of your text.) 5. Why will you calculate accurate...
question 2: choice 1- corrosive, flammable, oxidizers choice 2- the skin and lab surfaces, clean glassware, water choice 3- immediately, before leaving, Art the end of the procedure question 5: choice 1- The indicator changes color, The pH equals the pKa, moles of acid equals moles of base choice 2- moles of acid equals moles of base, The indicator changes color, The pH equals pKa Question 2 Status: Not yet answered | Points possible: 1.00 Make every effort to avoid...
7. (1 pt) Why was it important to exclude water from your apparatus, glassware and reagents that are being exposed to the Grignard reagent? Write a chemical equation that supports your explanation
Procedure 1. Arrange the burette and other equipment as shown in Figure 1. Use a 250-ml Erlenmeyer flask for the titration 2. Fill the burette with NaOH solution using a funnel. (Wear goggles and gloves!) Record the concentration (molarity) of the base in the Data Table on the Worksheet. 3. Measure out 100 mL of flat Mountain Dew in a graduated cylinder and transfer it to the 250-ml Erlenmeyer flask. (If you will be using a magnetic stirrer, place a...
1. If the bubble in the tip of the buret is not removed prior to performing the HCl titration, will the reported concentration of the HCl be greater than, less than, or equal to the true concentration of the HCl if the bubble is pushed from the buret during the titration? Explain your answer. 2. Explain why it is not always necessary to refill the buret after every titration. 3. Explain why it is not necessary to dry the Erlenmeyer...
Experiment Quantitative Titration - Part 1: Standardization of Sodium Hydroxide Solution Concentration of HCL standard solution / mol L^-1 = 0.09745 Volume of HCL solution / mL = 25 Indicator: Bromothymol Blue Average Volume of NaOH / mL = 24.35 Please find concentration of NaOH / mol^-1 Part 2 - Determination of the concentration of acetic acid Volume of Acedic Acid Solution / mL = 10 Indicator: Phenolphthalein Average Volume of NaOH / mL = 30.94 Please find the concentration...