Determination of water hardness using a titration lab report

The properties of form, appearance, and behaviour when mixed with metals are more like metals. Elasticity and general chemical behaviour are more like nonmetals. Electrical conductivity, band structure, ionization energy, electronegativity, and oxides are intermediate between the two. Common applications[ edit ] The focus of this section is on the recognised metalloids.

Determination of water hardness using a titration lab report


As the tannins produce hydrogen peroxide the colour changes and then the peroxide changes the ethanol to ethanal and then on to acetic acid. The colour will change, the smell will be different, the ethanol decreases, the titratable acidity will increase.

Determination of water hardness using a titration lab report

Maybe worth checking out. For teachers who would like to have a basic introduction to wine chemistry or would like to have a refresher, the Queensland College of Wine Tourism at Stanthorpe offers a professional development workshop that may be useful.

No recommendations are made as it is up to teachers to check it out but reports have been good. No recommendations are made here but more information is available for download or on their website.


Ginger Beer - avoiding the headaches Investigating the production of alcohol in wine can give you a few headaches - particularly if you think someone will drink your experiment.

Ginger beer is made traditionally by the yeast fermentation of a mix of sugar, water and ginger. It is rarely produced commercially but often home brewed. The beverage produced industrially is generally not brewed fermentedbut carbonated with pressurized carbon dioxide.

It is really just a soft drink, sweetened with sugar or artificial sweeteners. However, there are some manufacturers who still brew it the old way: It is cloudy and if you hold the bottle up to the light and you'll see it's full of ginger pieces.

Bundaberg Brewing uses the real ginger 'bug' plant. Brew up some batches in the school lab - but don't drink it. The suspended yeast makes it look cloudy. Gary suggests this for his Year 12 EEI: You will be following a 'standard' procedure for making a simple beer e. This section of the work will also require you to define which factors you can reasonably test in a school-laboratory, and which variables in the production that you can vary.

Determination of water hardness using a titration lab report

A copy of the EEI task sheet is available for download here. You need a fridge and an incubator to give you three temps including room temp for the temp-as-variable". His method is one of many that can be easily obtained from the internet: You need to create what is called a Ginger Beer Plant.

Put 15g of general purpose dried yeast into a large jar or bowl, add mL water, 2 teaspoons ground ginger and 2 teaspoons sugar. Cover with a sheet of cling film and secure with a rubber band. Each day, for seven days, add 1 teaspoon of ginger and 1 teaspoon of sugar to the mixture in the jar.

Now strain the mixture through a piece of fine muslin and add the juice of two lemons to the liquid. Add 50g or sugar to the liquid and make up to 4.

Bottle into a plastic bottle Keep for days when the ginger beer is sparkling and ready for drinking. You can keep the sediment that you have left after straining the ginger beer plant. Divide into two jars and give 1 plant away to a friend with the instructions. To the sediment add mL water, 2 teaspoons sugar and 2 teaspoons ginger and carry on as before.

Also, most fermented soft drinks are acidified to inhibit bacterial growth. Does this also inhibit the yeast? You could investigate the effect of pH on the rate of fermentation using lemon juice or better - citric acid.

The juice of 1 lemon contains about 12 g citic acid.UNITED NATIONS ENVIRONMENT PROGRAMME INTERNATIONAL LABOUR ORGANISATION WORLD HEALTH ORGANIZATION INTERNATIONAL PROGRAMME ON CHEMICAL SAFETY ENVIRONMENTAL HEALTH CRITERIA Aluminium This report contains the collective views of an international group of experts and does not necessarily represent the decisions or the stated policy of .

* Some lab experiments must be performed using any circuit simulation software e.g. PSPICE.

Determining Total Hardness in Water Chemistry Tutorial

NOTE: weeks training will be held after fourth semester. However, Viva-Voce will . Recognition status, as metalloids, of some elements in the p-block of the periodic table. Percentages are median appearance frequencies in the lists of metalloids. The staircase-shaped line is a typical example of the arbitrary metal–nonmetal dividing line found on some periodic tables.

How to test water hardness & how to measure it using test strips, a water hardness soap test solution and other methods. This article explains how to measure water hardness or grains of hardness: a measure of water mineral content.

Hardness of water: temporary and permanent hardness, disadvantages of hard water -Softening of hard water - Zeolite process, demineralization process and reverse osmosis - Purification of water for domestic use: use of chlorine, Ozone and UV light - Definition and determinations of BOD and COD.

Depending on this complexity, the formation of a coordinating analytical transfer team (ATT) may facilitate the process. The ATT should be formed by representatives of SU and RU and should include all affected functions, of course analytics, regulatory, quality assurance, production, etc.