Posts

Showing posts from 2016

Make Concentrated Sulfuric from Battery Acid

Image
                                                                           Hello everybody. Now we are going to make concentrated sulfuric acid from battery acid. Also you can use other types of sulfuric acid. However concentrated sulfuric acid is extremely dangerous. So you must be careful when working with it.                                    In this experiment I used battery acid. It has 29% to 32% of sulfuric acid. It means, if we get 50ml of battery acid, there will be 15ml of sulfuric acid (in 30% solution). Sulfuric acid is boiling at 337 0 C. (In 300 0 C, it will decompose slowly) But water is boiling at 100 0 C. So we can heat and remove water from solution.                 from Wikipedia.com Mass fraction H 2 SO 4 Density (kg/L) Concentration (mol/L) Common name 10% 1.07 ~1 dilute sulfuric acid 29–32% 1.25–1.28 4.2–5 battery acid (used in lead–acid batteries ) 62–70% 1.52–1.60 9.6–11.5 chamber acid fertilizer acid 78–80% 1.70–1.73 13.5–14 tower ac

Bi-color LED bulb

Image
Hello everybody! I made my white color LED bulb into a bi-color LED bulb. To see how I made it, click the link bellow. http://www.instructables.com/id/White-LED-Bulb-Into-a-Bi-color-LED-Bulb/

Salt Crystals

Image
Hi everybody. Since last month I tried make a large salt crystal. But I couldn't. However I could make small salt crystals.