two different temperatures. If the volume-to-temperature ratios are the same at both temperatures‚ Charles’s law is verified. The gas you will use in this experiment is air. You will find the volume of air in an Erlenmeyer flask at two different temperatures. First‚ the air in the flask will be heated to the
Premium Pressure Water Temperature
The methods used were quiet precise. The burette and pipette have some limitations due to being less precise. The volume of burette limited the amount of trial that were attempted and it needed to be refilled. The Erlenmeyer flask resisted the splashing of the solution outside the flask which would have been occurred due to swirling. This caused the value‚ of the number of moles of HCl needed to neutralize NaOH‚ to be more accurate. Experimental errors could possibly be as follow:•NAOH was lost to
Free Titration
Experimental: Benzyltriphenylphosphonium chloride (0.201g) and 9-anthraldehyde (0.116g) were weighed and added to a short-neck round-bottomed flask (5ml). Dichloromethane (2ml) was measured using a measuring cylinder and added to the flask‚ and every solid material was washed down the bottom of the flask. The flask was then stirred using a magnetic stirrer at high speed whilst adding 50% aqueous sodium hydroxide (0.25ml) drop wise using a pipette. After complete addition of
Premium Chemistry Laboratory glassware Organic chemistry
between 20 milliliters and 40 milliliters of the unknown HCl solution. 4. Record volume. 5. The amount of unknown HCl is then added to the 100-milliliter Erlenmeyer flask. 6. Add two drops of the indicator‚ phenolphthalein‚ to the acid in the flask. 7. Using the slider on the right hand side‚ add NaOH to the HCl in the Erlenmeyer flask (This action is known as titrate). Add the indicator until the color of the indicator turns a light shade of pink. 8. Record the volume. 9. If you went too
Premium PH Hydrochloric acid Titration
sample‚ but not to the standard that I would wash my hands with. Significant terms to know include purification‚ filtration‚ adsorption‚ volume‚ clarity‚ dissolved‚ filtrate‚ impurities‚ pipette‚ clay triangle‚ funnel cone‚ iron ring‚ beaker‚ and Erlenmeyer flask. Cautions to be aware of is to not pour any sand or gravel into the sink and do not test the water sample by drinking or tasting. There will not be any toxic chemicals involved in this lab. To perform this experiment you will need this equipment
Premium Water Water pollution Sewage treatment
in 70.0 mL of 0.020 M solution of benzoic acid in water: 0.070L x 0.020mol x 122.12g = 0.171g 1L 1mol 2. Mass of dry 125-mL Erlenmeyer flask: 122.758g 3. Mass of Erlenmeyer flask and benzoic acid after extraction and evaporation of the organic solvent: 122.895g 4. Grams of benzoic acid extracted into the organic layer (3 minus 2):
Premium
calculations. Procedures: Fermentation Weigh out 20.0 g of sucrose and place it into a 250-mL Erlenmeyer flask. Add 100 mL of water and gently shake until all the sucrose has dissolved. To this solution add 0.60 g of dipotassium hydrogen phosphate (K)‚ 1.8 g of sodium phosphate hydrate (Na3PO412HO) and 2.0 g of dried baker’s yeast. Vigorously shake the contents to mix them thoroughly. The Erlenmeyer flask is fitted with a one-hole rubber stopper containing a short piece of glass tubing. Latex tubing
Premium Distillation Laboratory glassware
chemical reactions the mass will deteriorate‚ but some might stay intact. Material: Erlenmeyer flask (250-mL) Small glass vile Rubber stopper to fit the flask Safety goggles Lab apron Graduated cylinders (10&25mL)
Premium Chemistry Oxygen Hydrogen
of an approximately 0.100 M NaOH solution. Transfer the calculated volume of the 6.00 M NaOH solution to a volumetric flask using a graduated cylinder. Obtain a 25mL buret‚ and rinse and fill it with the prepared base solution. Make sure there are no air bubbles trap within the buret. Calculate the amount of KHP required to reach equivalence point. Using a 125mL Erlenmeyer flask‚ place it on a balance‚ and add KHP to it until the balance reads the calculated the same amount as the KHP calculated
Free Titration Acid Sodium hydroxide
After that connect the temperature probe to the LabQuest and select new from the file menu. Now that you have the LabQuest ready you need to assemble the Erlenmeyer flask with the rubber stopper (make sure it’s tight). Now set up large containers of water baths from ice water to hot. Use a large volumetric beaker so that way the Erlenmeyer flask fit inside. After that change the graph settings to display graph of pressure vs. temperature. Now you can start collecting you data from the different temperatures
Premium Pressure Temperature Gas