Why do you not want any water on the outside of the Erlenmeyer flask to drip off into the calorimeter?
Why do you not want any water on the outside of the Erlenmeyer flask to drip...
In lab you determine the mass of an empty Erlenmeyer flask to be 53.5g. After adding metal, the mass of the flask is now 95.6g. After filling the flask up to the top with water, its mass is now 130.0g You then empty the flask and refill it entirely with water. The mass of the flask full of water is 103.5g What is the density of the metal in g/ml? (The density of water is 1.00g/ml). You have 865g of...
Does adding boiled, deionized water to the titrating flask to wash the wall of the Erlenmeyer flask and the buret tip affect the Ksp value of the Ca(OH)2? Explain.
5. During the titration of an acid with a base, the sides of the Erlenmeyer flask are washed with distilled water. Do you think this rinsing will affect the outcome of the titration? Why or why not? 6. The approximate concentration of the NaOH solution you will prepare in Part A of this ex- periment is 0.12 M. Calculate the number of moles and the number of grams of oxalic acid (H,C,0, 2H,O) that will be required to neutralize 25...
1) Suppose you added 100 mL of water to your vinegar sample in the Erlenmeyer flask instead of 50 mL. Would the titration have required more, less or the same amount of NaOH for a complete reaction? Explain. 2)You used a 10.00 mL volumetric pipet to dispense the vinegar sample. Can you use a cylinder instead if it has the same precision?
Does adding boiled, deionized water to the titrating flask to wash the wall of the erlenmeyer flask and the buret tip increase, decrease, or have no effect on the Ksp value of the Ca(OH)2?
i just wanna double check whether i answered correct or not
please.
Why do we measure the volume of the flask in this experiment with water rather than using the volume listed on the side? Select all correct answers that apply. Must include all correct answers for full credit. The volume is not accurate on a flask to the number of significant figures required for this experiment The volumetric markings on the flask do not extend to it's full height...
you titrated an unknown acid with 0.0925 M NaOH, 0.6201g of the unknown acid was placed into an Erlenmeyer flask with10 ml of water and 2-3 drops of phenolphthalein. It took 32.34ml of NaOH to reach the endpoint. What is the pKa of the unknown acid? pH at endpoint is 7.19.
Anthracene -9-methanol and 3 equivalents of N-methylmaleimide were mixed with water in an Erlenmeyer flask and heated to reflux( Diels-Adler reaction) TLC was prepared using a 1:1 ratio ethyl acetate: hexane. We got Rf=0.8 for N-methylmaleimide Rf=0.6 for anthracene and Rf=0.3 for the mixture. What information does this provide?
1.53 g of aluminum metal is placed in a Erlenmeyer flask with 1.5 M sulfuric acid. The hydrogen gas produced from the reaction is collected over water as seen in the diagram below. The aluminum is allowed to react with the sulfuric acid until it stops reacting. There is still some unreacted aluminum left in the reaction flask. The gas in the collection flask is brought to the same atmospheric pressure as the surroundings, 765.25 torr and a temperature of...
Aspirin Mechanism Why prepare a hot water bath , using a hot plate to create a water bath for the erlenmeyer flask? Within an empty erlenmeyer flask, add salicylic acid, acetic anhydride and sulfuric acid (catalyst) - why catalyst? Why place the erlenmeyer flask in an ice bath? What does that help with? Liquid acetic anhydride goes through conformation in the presence of H3O - why? Why does the salicylic acid attacks the acetic anhydride’s carbonyl carbon? Is this a...