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c5 (reaction of HCL and marble chips, precipitation, volume of gas given…
c5
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precipitation
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mix 2 reactant solutions , put flask on piece of paper that has a mark on it
observe mark through mixture, faster dissapears, faster the reaction - result is subjective might not agree on when mark disappears
volume of gas given off
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more gas given off in time , faster the reaction
if you use wrong size of syringe reaction might be too vigorus and blow the plunger out of the end of the syringe
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change in mass
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gas released, lost mass is easily measured on balance, quicker reading of balance drops faster reaction
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