Chem 110- Fall 2012 Review Questions –Chapters 15 1. What mass of NaOH is required to prepare 100.0 mL of NaOH(aq) that has a pH = 13.62? 2. What is the [OH-] in 0.025 M HCl ? 3. What is the pH of 0.50 M Sr(OH)2 ? 4. The pH of an aqueous solution is 10.32. The [OH-] is …………………… 5. The [H+] in 0.050 M Mg(OH)2 at 25oC is ………………………. 6. The pH of 0.20 M HNO3 is ……………………. 7. A solution is prepared by adding 200. mL of 0.125 M of HCl to a 500.0mL volumetric
Premium PH Acid Ammonia
all reagents‚ the reaction mixture was allowed to stand at room temperature for different time interval and the fluorescence intensity was measured. Different surfactants were added to the reaction cocktail. These included; an anionic surfactant (sodium dodecyl sulfate‚ SDS)‚ a cationic surfactant (cetyl pyridinum chloride‚ CPC) and non-ionic surfactant (Tween-80‚ Tween-20) and polyethylene glycol‚ PEG. 2.10. Determination of the reaction stoichiometry Job’s method of continuous variation (25) was
Premium Chemistry Solvent Acetic acid
2.4.General procedure for the synthesis of 2‚3-dihydriquinazolin-4(1H) ones derivatives: A stirred mixture of isatoic anhydride (1 mmol)‚ amines containing 2-aminobenzothiazole or 2-amino benzimidazole (1.1mmol)‚ aromatic aldehydes (1 mmol) and 0.045 g of H-ZSM-5 nanozeolite was reacted in an oil bath at 100 oC for the appropriated times. Completion of the reaction was indicated by TLC. After completion of reaction‚ the mixture was cooled to room temperature. The solid residue was dissolved in hot
Premium Chemistry Ethanol Acetic acid
according to this equation: HCl (aq)+ NaOH(aq) → NaCl(aq) + H2O(l) HCl is a strong acid‚ NaOH is also a strong base‚ therefore they will dissolve completely. By adding NaOH into HCl‚ the hydrogen ions neutralized with hydroxide ions‚ the theoretical endpoint and then the solution will be weak basic solution. The endpoint
Premium Sodium hydroxide Chemistry Titration
| 0.15 | 0.567 | BLEACHING: Mts=442 Weight=206.4 Volume=450l Type=non organic Temperature=80 ITEM | G/L | PERCENTAGE | QUANTITY | Bleaching liquor | 2 | 0 | 0.9 | Soda ash | 0 | 0.05 | 0.10 | Hydrogen peroxide | 0 | 1.5 | 3.09 | Sodium silicate | 0 | 0.5 | 1.03270 | Sarometa | 0 | 0.1 | 0.206 | Sapoleneconc | 0.5 | 0 | 0.295 | Acetic acid 99% | 2 | 0 | 0.90 | MACHINE AND CAPACITY DETAILS S.NO | M/C | CAPACITY(kg) | VOLUME(litre) | WIDTH(inch) | 1 | Kier make up tank
Premium Chlorine Sodium hydroxide Oxygen
conducting the experiment‚ fill in the table (2) below: Weight Boat Chemical Contents Litmus Results Additional Observations A 5ml of Water The litmus paper didn’t really change it stayed a purple color. The paper seemed to stay a purple color. B .5g of Sodium Bicarbonate and 5ml of water The litmus paper turned blue. The paper once dipped in the solution turned a dark blue immediately. C 5ml of Acetic Acid (Vinegar) The litmus paper turned red. The paper gradually turned red after being dipped in. Neutralization
Free Acid Base Chemistry
Lacy Taylor iLab‚ Week #5 UNKNOWN ACID AND BASE TITRATION Introduction The pH‚ or the concentration of the hydrogen plus ion [H+]‚ is one of the most critical parameters in predicting if a system will corrode‚ or determining why a system is corroding. PH is defined as the negative log base 10 of the hydrogen plus ion concentration in the units of moles per litre. Procedure pH MEASUREMENT OF UNKNOWN SOLUTIONS Obtain the following apparatus from the equipment menu: 100 mL beaker
Premium Acid Titration Sodium hydroxide
Since the Grignard reagent can easily react with water‚ all glassware including the 25 ml round bottom flask‚ magnetic stir bar‚ 3 and 5 ml conical vial‚ 50 mL Erlenmeyer flask‚ claisen adapter‚ drying tube and 5 glass pasteur pipets were first added to a 250mL beaker and placed in the oven for 30 minutes. After the completion of the thirty minutes‚ 0.150 g of shiny magnesium turnings and a stir bar was first added to the round bottom flask and the claisen adapter along with the drying tube packed
Premium Chemistry Water Solvent
Determining the enthalpy of neutralization by calorimetry Anam Iqbal Partner’s name: Danielle Hodgson TA’s name: Karinna Section # 003 Due date: November 24‚ 2009 Introduction The purpose of the experiment is to determine the enthalpy of neutralization reactions by calorimetry. Calorimetry‚ is the science of measuring the amount of heat. All calorimetric techniques are therefore based on the measurement of heat that may be generated (exothermic process) or consumed (endothermic process). The
Premium Thermodynamics Enthalpy Sodium hydroxide
Squid Soap by Airborne Squid Soap is a new product on the market introduced by Airborne‚ Inc. This company is committed to healthy living and teaching healthy behaviors to young children. Airborne‚ Inc. was started by Victoria Knight-McDowell‚ a second grade teacher‚ who developed a drug free‚ immune fighting‚ herbal formula to help combat the many germs and viruses that are prevalent in schools today. Since the debut of the herbal supplement‚ Airborne has become a house-hold name. The
Premium Soap dispenser Soap Sodium hydroxide