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CHEM1002010
In a reaction between aluminium and dilute hydrochloric acid, 240 cm³ of hydrogen gas is produced in 2 minute. Find the rate of the reaction in the unit of cm³/s.
13.0g of zinc reacts completely with excess hydrochloric acid in 5 minutes. Find the average of the reaction.
The graph shows the volume of carbon dioxide produced against time in a chemical reaction. Find the rate of reaction for the first 4 minutes.
In a reaction between dilute hydrochloric acid and sodium thiosulphate, sulphur precipitate was produced after 40s. Find the rate of the reaction?
13.0g of zinc reacts completely with excess hydrochloric acid in 5 minutes. Find the average of the reaction. [ Relative atomic mass of Zinc = 65]
2HCl(aq) + Na2S2O3(aq) → 2NaCl(aq) + S(s) + SO2(g) + H2O(l)
The equation above represents the reaction between dilute hydrochloric acid and sodium thiosulphate. Given that sulphur precipitate was produced after 40 seconds. What is the rate of the reaction?