Chem Sba 1

Name Derell Ruan Form 4B1 SBA Chemistry Aim To determine which gas, ammonia water or hydrogen chloride defuses express. Hypothesis ammonium ion hydroxide will defuse scurrying than hydrogen chloride. Materials Equipment Chemicals * 2 retort clamp and stand Ammonia * 1 ? m icing vacuum tube * 2 250cm3 beakers * Cotton Wool * point clock * Meter rule * Tweezers * 2 Rubber bum order The equipment was collected. * The glass tube was placed between the two clamps ensuring that it was leveled. * A teensy-weensy arrive of hydrochloric acid was poured into the beaker. * The cotton wool was placed at genius end of the glass tube using tweezers. Seal it off with a rubber bum. * Repeating steps 3-5 simultaneously. * The stop clock was started, keeping register of time taken to the white cloud to form. * The meter rule was employ to measure the distance of the white cloud from each end of the tube. ResultsChemical surpass Time ( in sec) Rate of Diffusion Molecular weight Ammonia 90 285 0. 315 17. 03 Hydrochloric acid 60 285 0. 210 36. 46 Interpretation of results The purpose of the glass tube is to eliminate air currents and to let the gas molecules will hit on their own. The gas molecules follow a path through the tube as they collide with the air molecules in the tube. Ammonia will diffuses faster because it has a faster rate of diffusion and it is near twice a light as Hydrochloric acid.A cloud like figure should show up when the gases collide. Conclusion The reaction which is taking place is ammonia + hydrogen chloride ammonium chloride NH3(g) + HCl (g) NH4Cl (s) The exact time taken for the cloud to form depended on the dimensions of the tube, and the amount of the solutions which are put on the cotton wool. The cloud formed near to the hydrochloric acid end of the tube because ammonia diffuses faster than hydrochloric acid.This is because hydrogen chloride has almost twice the molecular weight of ammonia, and the rate of diffusion is inversely r elative to the square root of the molecular mass of the gas. The hypothesis was correct and is proved by the results of the experiment and what was interpreted was also proven by the results of the experiment. Limitations The experiment could not have been conducted several times enabling the results to be to a greater extent accurate, because of the high risk that it could have done to the human body.