Recent content by archie

manometer on traditional manometer, i.e U-shaped tube, the height difference between the left and the right column is the "h" To calculate the "manometric" pressure use this formula Pressure = density of the liquid * gravity constant * the height difference "h" To obtain the absolute...

artificial sweetner artificial sweetner like equal, etc could be made from several compounds: the most popular one nowadays is : aspartam the older compounds including : saccharin, cyclamate, etc. Just search these name on the internet to find the chemical formula. hope it helps

The excess of acetic acid is used to shift the equilibrium to the right so more isopentyl acetate is produced.

usage Platinum electrode The usage of Pt electrode for electrolysing NaCl soln is not really recommended. Though Pt is very inert metal, it's prone to the attack of Chlorine that will be formed at the anode. Your expensive anode may be corroded. If u are electrolysing water to obtain hydrogen...

electrolysis of NaCl What's happening when u electrolysis NaCl (it's called Sodium Chloride in english, table salt) soln is really different from electrolysing it in molten state. When u electrolyse molten NaCl ( approx. 800 centrigrade) sodium/natrium, Na metal will be obtained at the...

H2SO4 and HNO3 Legally I think it's quite difficult to obtain these 2 mineral acids esp. in the concentrated form. You can try your luck by asking to private or public (chemical) laboratory nearby or high school/university laboratory. H2SO4 at approx. 25% (d= approx 1.2g/mL) strength is...

SO4 ion detection The simplest and probably cheapest way to determine the presence of sulphate ion in the water is by using Barium Chloride soln. ( BaCl2 is preferrable than Barium Nitrate because it's more water soluble). Dissolve about 5 to 10 gram of BaCl2.2H2O in 100 ml distilled water. To...

Al remaining Assuming 10 g of Fe2O3 = 0.0626 moles (too lazy to look at periodic table), then Al remains is (1 - (2*0.0626))= 0.8748 mol of Al = approx. 23.6 g of Al