Internal Assessment: Hess’s Law DESIGN: Research Question: How can the heat of reaction of two separate equations be combined using Hess’s Law to determine the hear of reaction of sodium hydroxide solution with dilute hydrochloric acid? Introduction: Hess’s Law has been the basis of thermochemistry for the past century. It states that the total enthalpy …
Corrosion is the breaking down or destruction of a material, especially a metal, through chemical reactions. the most common form of corrosion is rust which occurs when iron combines with oxygen and water.”(Dictionary.com, 2018) “like pure iron, corrode quickly. Stainless steel, however, which combines iron and other alloys, is slower to corrode and is therefore …
To carry out the sodium borohydride reduction, 1.0g benzoin previously synthesized was combined in a 125mL Erlenmeyer flask with 15mL 100% ethanol and 250mg sodium borohydride. The flask was stirred on a magnetic stir plate for 15min. After 15 minutes, a thin-layer chromatography (TLC) analysis was performed to check for reaction completeness. The TLC developing …
Surface Tension Abstract: To determine the surface tension of water with different concentrations of sodium chloride, capillary rise was examined. This was done by examining the height a liquid rose in a capillary depending on the concentration. The liquid was but in an apparatus containing the capillary, and the system was disrupted and the let …
An Experiment On Water’s Surface Tension In Different Sodium Chloride Concentration Read More »
I’ll put different quantities of salt in a ice tray with water and freeze it at 32 degrees fahrenheit. I’m going to check the water every 10 min. It will most likely not freeze faster because it ice melt faster. The definition of freeze is to become hardened into ice or into a solid body; …
The freezing time of water with different quantities of salt Read More »
