The higher the temperature, the more kinetic energy the particles will have, so they will move and mix more quickly. The greater the surface area, the faster the rate of diffusion.

The rate of diffusion is affected by the concentration gradient, membrane permeability, temperature, and pressure. Diffusion takes place as long as there is a difference between the concentrations of a substance across a barrier.

C)Why does temperature affect the rate of diffusion? (Hint:Consider the relationship betweentemperature and the speed at which particles move.) Well there is a lot more energy in the boiling water, and faster moving particles, which makes more movement. And the more movement, the more diffusion.

As with any chemical reaction, increasing the temperature or pressure increases the kinetic energy of the particles, thus increasing the rate of diffusion. Concentration Gradient: The greater the concentration gradient (the difference in concentration either side of the membrane) the greater the rate of diffusion.

Why does pH affect the rate of diffusion? The acidity of alkaline properties of the solute can affect the stability of the cell(s). The ability of the solute being able to diffuse in each state depending on the state the substance is in as well. Solid diffusing into a liquid.

It is important to note however that there are reactions involving gases in which a pressure change does not affect the reaction rate. For this reason, the rates of reactions involving gases have to be determined by experiment. Also note that solids and liquids are not affected by pressure changes.

The smaller the angle of incidence of the sun’s rays, the greater the distance through the atmosphere the rays have to pass. More heat is absorbed by the atmosphere or reflected back into outer space, which results in less heat reaching the Earth’s surface. Altitude is the height of a point above the sea level.

Temperature. Usually reactions speed up with increasing temperature. Physical state of reactants. Powders react faster than blocks – greater surface area and since the reaction occurs at the surface we get a faster rate.

The rate of a reaction can be increased by adding a suitable catalyst. A catalyst is a substance which increases the rate of a chemical reaction but it is not used up (remains chemically unchanged at the end). It provides an alternative reaction pathway of lower activation energy.

The presence of a catalyst increases the reaction rate (in both forward and reverse reactions) by providing an alternative pathway with lower activation energy. If the activation energy is lowered, more reactants can cross that barrier easily and so, the rate of reaction increases.

Equilibrium constants are not changed if you add (or change) a catalyst. The only thing that changes an equilibrium constant is a change of temperature. A catalyst speeds up both the forward and back reactions by exactly the same amount.

A catalyst isn’t a reactant in the chemical reaction it speeds up. As a result, it isn’t changed or used up in the reaction, so it can go on to catalyze many more reactions.

The composition of equilibrium mixtures is not changed by a catalyst.

Catalysts are chemical compounds that increase the rate of a reaction by lowering the activation energy required to reach the transition state. Unlike reactants, a catalyst is not consumed as part of the reaction process.

Catalyst gets from reactant to product, intermediate goes from product to reactant. So if you want to write this equation including the catalyst, we know it that’s it’s there, best way to write it is like this; S2O8-2 plus 2I-2 that’s my big arrow.

Only a very small mass of catalyst is needed to increase the rate of a reaction. However, not all reactions have suitable catalysts. Catalysts only affect the rate of reaction – they do not affect the yield of the reaction.

A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process. Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism.

Catalyst, in chemistry, any substance that increases the rate of a reaction without itself being consumed….Catalyst.

Enzymes are proteins that have a specific function. They speed up the rate of chemical reactions in a cell or outside a cell. Enzymes act as catalysts; they do not get consumed in the chemical reactions that they accelerate.

Salt can be considered a catalyst in the reaction but has a different role than most catalysts. Copper II sulfate and aluminum react very slowly because aluminum is coated with a very thin layer of tarnish (aluminum oxide). This reaction can be sped up if the layer of aluminum oxide is removed or compromised.

When salt is added, it makes it harder for the water molecules to escape from the pot and enter the gas phase, which happens when water boils, Giddings said. This gives salt water a higher boiling point, she said. “The temperature of saltwater will get hotter faster than that of pure water,” Giddings said.

How? By adding a catalyst. Yeast is an organism that contains a special chemical called catalase that can act as a catalyst to help break down hydrogen peroxide. Catalase is present in almost all living things that are exposed to oxygen, and it helps them break down naturally occurring hydrogen peroxide.

A catalyst is a substance added to a chemical reaction that increases the rate of the reaction without itself being consumed. A hidden talent of sodium bicarbonate — better known as baking soda — is neutralizing acids, including strong varieties such as hydrochloric acid.