Does Concentrated Acid or Diluted Acid React Faster? :: Science Experiments Reaction Rates Essays

Does Concentrated Acid or Diluted Acid React Faster?PlanI am going to carry out a reaction between Magnesium ribbon andHydrochloric acid. The aim of this investigation is to work out whichreacts faster, concentrated acid or diluted acid. I pass on suppose if thereaction is fast or slow by observing the bubbles which occur duringthe reaction and also observe if the Magnesium has disappe bed. Onlythe concentration of the acid will be changed - the Magnesium is asolid.Magnesium + Hydrochloric Acid Magnesium Chloride + HydrogenMg(s) + 2HCl(aq) MgCl(aq) + H2 (g)There are four main factors which may affect rate of reaction. Theseare -1. Concentration2. Temperature3. Catalyst4. Surface areaCONCENTRATION- if the concentration of the acid is increased, the rategoes faster. In a concentrated acid there are more particles in itthis means that there is a more chance of successful collisionsoccurring. If the acid was diluted, there are not many acid particles,which means that there is not much chance of an acid particle hittinga magnesium atom. At the start, there are plenty of Magnesium atomsand acid particles but they present used up during successful collisions.After, a time there a fewer Magnesium atoms and the acid is lessconcentrated so the reaction slows down. This graphical record shows this -volume of hydrogenTime Diluted Acid Concentrated Acid= Acid particle = water molecule = MagnesiumatomTEMPERATURE - at low temperatures the particles of reacting substancesdont have enough energy. So if the substances were heated this wouldmean the particles take in energy. This causes them to move faster andcollide vigorously very often. Also making more successful collisions. because the rate of reaction increases.CATALYST - using a catalyst can speed up reactions. If there is acatalyst in the reaction so the collision needs less energy in orderto be successful. This results into more collisions becomingsuccessful, so the reaction goes faster, catalysts are very imp ortantin industry. Reactions are speeded up at low temperatures, which meansless fuel is needed so money is saved.SURFACE AREA - if the Magnesium had a stupendous surface area the atoms inthe outer layer will only collide with the acid particles but if themetal was powdered, many more atoms are exposed, so there is a greaterchance of successful collisions.Concentrated Acid = Acid particle = water molecule = Magnesium atomCOLLISION speculationThe Collision Theory is used to predict the rate of reaction. TheTheory is based on the fact that for a reaction to take place, it is