Reactant Lab Report
Explore the relationship between reactants producing a product and product breaking apart to its original reactant. Watch as both reactant and product reach a state of balance. No pressure greater than one another.
Collision model provides characteristics of chemical reaction. Molecules must collide in order to react; and Characteristics such as higher concentrations, high temperature, etc. plays the role of increasing the speed of reaction or having more collisions. Scientists use collision model to understand why some molecules react and some do not. Also see how strong collision can break the bond of molecules to produce the product. molecules collision needs energy to break bonds. Molecules needs a certain minimum energy (activation energy) so a …show more content…
reaction will occur. Energy Greater activation energy (Ea) = collision. Energy < Ea = molecules bounce away. Catalyst (speeds up reaction without affecting the temp. or concentrations) lowers Ea so there’s enough collisions for energy to react.
To write an equilibrium expression, check whether the equation is balanced and the state of matter for each species. Equilibrium expression is a ratio of the concentration of product over reactants. The bracket used represent the moles per liter of the species.The numbers that go before the species like 3 & 2 (using the image below) is the coefficient of the species. The coefficient would be written outside of the bracket on the top right corner. The only time a species is not shown on an equilibrium expression is when the species is a solid or pure liquid.
When an equilibrium suddenly becomes unbalanced from conditions such as temp etc.
the position of equilibrium moves to counteract the change. Any increase on the product or reactant will move to the opposite direction of the increased product/reactant. Decrease in VOL. (increase in pressure) will shift to the side with fewer gas molecules. Increase in VOL. (decrease in pressure) will shift to the side with more gas molecules. If the temp. increase, the equilibrium will shift away from the heat. The opposite would happen when the temp. decrease. Decrease temp. will shift toward the heat. (Heat is determined by whether the equation is an endo or exothermic. Endothermic consume heat, exo. generates heat.
Equilibrium constants can be obtained from the ratio written from equilibrium expressions. The ratio of product over reactant will give K (known as the constant). If k is greater than 1, then equilibrium favors product. If k is less than 1, the equilibrium favors reactant.For gases that do not follow the ideal gas laws, using activities, a dimensionless ratio, will accurately determine the equilibrium constant that changes when concentration or pressure varies. Thus, the units are canceled and K becomes
unitless.
Collision model provides characteristics of chemical reaction. Molecules must collide in order to react; and Characteristics such as higher concentrations, high temperature, etc. plays the role of increasing the speed of reaction or having more collisions. Scientists use collision model to understand why some molecules react and some do not. Also see how strong collision can break the bond of molecules to produce the product. molecules collision needs energy to break bonds. Molecules needs a certain minimum energy (activation energy) so a …show more content…
reaction will occur. Energy Greater activation energy (Ea) = collision. Energy < Ea = molecules bounce away. Catalyst (speeds up reaction without affecting the temp. or concentrations) lowers Ea so there’s enough collisions for energy to react.
To write an equilibrium expression, check whether the equation is balanced and the state of matter for each species. Equilibrium expression is a ratio of the concentration of product over reactants. The bracket used represent the moles per liter of the species.The numbers that go before the species like 3 & 2 (using the image below) is the coefficient of the species. The coefficient would be written outside of the bracket on the top right corner. The only time a species is not shown on an equilibrium expression is when the species is a solid or pure liquid.
When an equilibrium suddenly becomes unbalanced from conditions such as temp etc.
the position of equilibrium moves to counteract the change. Any increase on the product or reactant will move to the opposite direction of the increased product/reactant. Decrease in VOL. (increase in pressure) will shift to the side with fewer gas molecules. Increase in VOL. (decrease in pressure) will shift to the side with more gas molecules. If the temp. increase, the equilibrium will shift away from the heat. The opposite would happen when the temp. decrease. Decrease temp. will shift toward the heat. (Heat is determined by whether the equation is an endo or exothermic. Endothermic consume heat, exo. generates heat.
Equilibrium constants can be obtained from the ratio written from equilibrium expressions. The ratio of product over reactant will give K (known as the constant). If k is greater than 1, then equilibrium favors product. If k is less than 1, the equilibrium favors reactant.For gases that do not follow the ideal gas laws, using activities, a dimensionless ratio, will accurately determine the equilibrium constant that changes when concentration or pressure varies. Thus, the units are canceled and K becomes
unitless.