Choose all the answers that apply. which of the following will decrease reaction rate? increase pressure decrease temperature increase concentration decrease concentration

The following will decrease reaction rate

decrease temperature  decrease concentrationFurther explanation  

The reaction rate (v) shows the change in the concentration of the substance (changes in addition to concentrations for reaction products or changes in concentration reduction for reactants) per unit time.  

Can be formulated:  

Reaction: aA ---> bB  

 

or  

 

A = reagent  

B = product  

v = reaction rate  

t = reaction time  

In chemical reactions several factors influence :

1. Temperature

The temperature of the reaction that is raised will cause the particles to move more actively so that collisions between particles will become more frequent so that the speed of chemical reactions will be greater

2. Pressure

Addition of pressure will increase the concentration because the volume is reduced, a greater concentration will accelerate the reaction

3. Concentration

The greater the concentration, the more substances dissolved and involved in the reaction, thereby increasing the speed of the reaction

4. Stirring

The mechanical force applied to the solution that reacts will cause more collisions to accelerate the reaction

5 Catalysts

Addition of a catalyst to accelerate the reaction without reaction with reactant substances

So the following will decrease reaction rate

decrease temperature  decrease concentrationLearn more

the rate of a reaction

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the rate of a reaction can be increased

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Endothermic and exothermic reactions

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the rate of a reaction can be increased2

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In reversible reaction chemistry equilibrium is attained when the forward and reverse reactions are taking place at the same rate, thus, the concentrations of reactants and products remain the same. a reversible reaction is a chemical reaction where the reactants form products that, in turn, react together to give the reactants back. in irreversible reactions on the other hand, the reactants react to form the products, which cannot revert back into reactants.