- Record Reaction Changes Temperature Changes Mass Changes Phase Changes Etc Experiment Observations Black To White G 1 (38.04 KiB) Viewed 38 times
experiment #1's balanced chemical reaction
Record reaction changes; temperature changes, mass changes, phase changes, etc. Experiment Observations Black to White/Gray powder Pre Heat: 40.000g Experiment #1 After Heat: 43.291 g Magnesium reaction in crucible Significant temperature increase Green to Black Experiment #2 Heating copper (1) carbonate hydroxide Before Heat: 40.000g After Heat: 38.597g Mass decrease Temperature increase Type of Reaction: Decomposition reaction Balanced Chemical Reaction: CuCO3Cu(OH)2 (s) →> CuQ (s) + CO2 (g) + H2O (g) Experiment #3 hydrochloric acid and zinc Type of Reaction: Displacement Reaction Balanced Chemical Reaction: Zn (s) + 2 HCl (aq)-> ZnCl2 (aq) + H2 (g) Type of Reaction: • Balanced Chemical Reaction: 35 mL of water, 16 mL of 6.0 M hydrochloric acid + 0.20g of zinc created bubbles in the solution Zinc increased the pressure and degrees Celsius of the flask The volume of gas was 74.54 mL When 2.0g of zinc was then added the temp increased even more but the pressure did not increase as much
35 mL of water, 16 mL of 6.0 M hydrochloric acid + 0.20g of zinc created bubbles in the solution Zinc increased the pressure and degrees Celsius of the flask The volume of gas was 74.54 mL Experiment #3 hydrochloric acid and zinc When 2.0g of zinc was then added the temp increased even more but the pressure did not increase as much Type of Reaction: Displacement Reaction Balanced Chemical Reaction: Zn (s) + 2 HCI (aq) →> ZnCl2 (aq) + H2 (g) NIC12 is lime green NaOH is light gray Experiment #4 solutions of NaOH and NICI₂ are combined When the contents are combined, they turn a pale green, briefly back to lime green and then clear with a green rim Temperature increased Type of Reaction: Precipitation Reaction Balanced Chemical Reaction: 2 NaOH(aq) + NICI, (aq) →> Ni(OH), (s) + 2 NaCl (aq) Complete lonic Equation: 2 Na+ (aq) + 2 OH- (aq) + Ni2+ (aq) + 2 Cl- (aq) -> N(OH), (s) + 2 Na+ (aq) + 2 Cl- (aq) Net lonic Equation: Ni2+ (aq) + 2 OH- (aq)-> N(CH), (s)