beakers. To begin with the indicator was purple. This is because water alone is not acidic or alkaline - we say it is neutral. Then we added a different test compound to each small beaker. We started by testing vinegar‚ which is weakly acidic‚ and sodium bicarbonate‚ which makes a weakalkaline solution in water. The acid turned the indicator pink‚ and the alkali turned it blue. The limescale remover turned the indicator red and the oven cleaner turned it green. Limescale remover contains astrong acid called hydrochloric
Premium Base PH Acid
concentration of the substance will remain the same. * Use the same pipette and burette throughout the experiment. Apparatus: * Burette * Weighing Bottle * Cylinder * Flasks Chemicals Needed: * Hcl * Phenolphthalein * Sodium Hydroxide Safety equipment: * Lab Coat * Safety goggles * Lab gloves Fig 2: Titration of an acid to a base by using phenolphthalein as the indicator. Proceudre: * Add 100 Ml of distilled water into a bottle * Measure the approximate
Premium Paracetamol Ibuprofen Sodium hydroxide
temperature of the calorimeter for the next three minutes. I was then able to calculate the heat capacity of my calorimeter by using the data that was collected. In part B of the lab I determined the heat of neutralization for hydrochloric acid and sodium hydroxide. I did this by first putting 50.0 mL of 1.0 M NaOH into the dry calorimeter and placing the lid on the calorimeter‚ but I did not measure the temperature of the base yet. I then obtained 50.0 mL of 1.0 M HCl in a dry beaker. I then placed the
Premium Sodium hydroxide Thermodynamics Enthalpy
soap and water. Rinse with tap water‚ then deionized water. 5. Add an amount equivalent to the size of a small pea of baking soda (sodium hydrogen carbonate) to a clean test tube. Add 10-20 drops of vinegar. (Vinegar is an aqueous solution of acetic acid‚ HC2H3O2). Record your observations. 6. IN THE HOOD‚ add an amount equivalent to the size of a small pea of sodium sulfite‚ Na2SO3‚ to a test tube. Add 10-20 drops of 6 M HCl. Record your observations. 7. Put 10 drops of 0.5 M nitric acid and
Premium Chemical reaction Chemistry Hydrogen
CHAPTER I THE PROBLEM AND ITS SETTTING Introduction Throughout the 20th century‚ plastics have been an essential part of the market industry. Most plastics are a combination of other organic and inorganic compounds; 20% of the content of a plastic is composed of additives. Biodegradable plastics are usually derived from proteins such as those that are present in a potato plant. Polymers are large molecules consisting of many repeating units‚ called monomers. Polymers can be made out of starch
Premium Starch Plastic Sodium hydroxide
retaining as much heat within the solution Research Question: By measuring temperature change of the reaction between hydrochloric acid (1.0M) and sodium hydroxide (1.0M) in different calorimeters‚ is a glass‚ styrofoam or copper calorimeter best for this reaction? Aim: By adding 40cm3 of 1.0M of hydrochloric acid (HCl) to 40cm3 of 1.0M of sodium hydroxide (NaCl) of known temperature in different calorimeters (glass‚ styrofoam or copper)‚ this experiment will measure temperature change of the solution
Premium Temperature Measurement Sodium hydroxide
* 50 cm3 conical flask * 10.00cm3 of 95% alcohol * 0.100 mol dm-3 sodium hydroxide * Phenolphthalein Procedure: 1. Bring samples of two different aspirin brands‚ note names‚ price‚ and the value of the aspirin per tablet indicated by the manufacturer. 2. Weight out accurately one tablet into a 50 cm3 conical flask and dissolve it in 10.0cm3 of 95% alcohol. 3. Titrate with 0.10 mol dm-3 sodium hydroxide solution using two drops of phenolphthalein solution as indicator in the first
Premium Sodium hydroxide PH Aspirin
contains four sections‚ SECTION A to SECTION D. Instructions: Answer all questions in SECTION A - SECTION D. Make sure that the section heading is included and your answers are correctly numbered. The assignment must have a completed cover sheet. It must be placed in the drop-box on or before the deadline. st SECTION A ELECTRONIC STRUCTURE & IONIZATION ENERGY 1. 2. Write the electronic structure in s‚p‚d notation of the following: O‚ Na‚ Na+‚ Al‚ Cl- and Co
Premium Sodium hydroxide Enthalpy Hydrochloric acid
LabVIEW (Laboratory Virtual Instrument Engineering Workbench)‚ created by National Instruments is a graphical programming language that uses icons instead of lines of text to create applications. A LabVIEW program consists of one or more virtual instruments (VIs)‚ Virtual instruments are called such because their appearance and operation often imitate actual physical instruments. The objective of developing a virtual interface that acquires data from physical instrument (pH probe) used in the monitoring
Premium PH Data acquisition Sodium hydroxide
measure 0.40 mL of the unknown labled “no.XX-.40 mL 2) With another 1ml graduated pipet measure 0.10 Ml of the unknown labled “no. XX- 0.10 mL” 3) Add the compounds to the same Erlenmeyer flask 4) Add 2.0 mL of 95% ethanol and 1.5 mL of 2 M sodium hydroxide solution to the flask 5)Stir with magnetic stirrer for 15 minutes or longer if precipitate still forming (if cloudy after 15 mina heat mixture on a asteam bath or in boiling water for 10 mins then cool to room temp) When precipitate
Premium Aldehyde Solvent Ethanol