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Nick Kember Gas Emission from an Alka-Seltzer Tablet Introduction The Experiment is to see how much gas you get from 1 Alka-Seltzer tablet and also how long it takes to collect 100cm³ of gas using the 1 tablet in 100cm³ of water. Aim The task set was to find out how rates of reaction of an Alka-Seltzer tablet dissolving in water, change when place in with varying conditions within the outline task a smaller task was set to see how long it takes to collect 100cm³ of gas. Variables These are all things that may effect the rate at which the Alka-Seltzer tablet dissolves. Water temperature Surface area Water volume Catalyst Concentration The Collision Theory The collision theory explains why surface area can affect the speed (rate) of a reaction. When the particles collide more often in a certain, reactions speed up. A chemical reaction only works if the atoms (or molecules) are colliding. The effect of surface...

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