Reaction Rate Lab

• the decomposition of H2O2 is given a catalyst (FeNO3) so it has a faster alternative that lowers the activation energy so more particles can overcome it
• the rate of decomposition for 1.5% H2O2 was much slower than 6% H2O2 because of the concentration difference
• a greater concentration means a greater reaction rate because there are more particles in a species with a higher concentration, so the frequency of collisions will be higher. therefore, the reaction will proceed faster
• NaHCO3 (aq) + HCl (aq) -> NaCl (aq) + H2CO3 (aq)
• H2CO3 (aq) -> H2O (l) + CO2 (g)
• a higher temperature means a higher reaction rate because a higher temperature means a greater average kinetic energy, so the particles have more motion. this results in a greater chance of collisions, so more particles can overcome the activation energy
• CaCO3 (s) + 2HCl (aq) -> CaCl2 (aq) + H2CO3 (aq)
• when chalk reacts with hydrochloric acid, CO2 gas is produced because of the decomposition of H2CO3
• powdered chalk had a higher reaction rate with HCl compared to a chunk of chalk because powdered chalk has a greater surface area
• a greater surface area means the reaction will occur faster because more particles are exposed to the other reactant so it has a greater chance of collisions
• a stronger acid means a higher reaction rate because strong acids can fully ionize in water, so charged particles can freely move and collide more effectively. ions present also mean the reaction will be faster because they react instantaneously
• Mg (s) + 2HCl (aq) -> MgCl2 (s) + H2 (g)
• Zn (s) + 2HCl (aq)-> ZnCl2 (s) + H2 (g)
• Mg has a smaller electronegativity value, so it has a faster reaction rate when it reacts with HCl because elements with lower electronegativities tend to get rid of their electrons. After all, the electrons do not have a strong attraction towards it. Therefore, it ionizes and reacts instantaneously