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Chemical reactions proceed via the formula:
R=k[a]x [b]y/[ab]c
Where
R= reaction rate
k= constant
[a] = concentration of first reactant
[b]= concentration of second reactant
[ab]= concentration of product
x,y,c = exponential that are unique to every reaction.
R therefore varies by:
Concentration of reactant a
Concentration of reactant b
Concentration of product ab
Value of reaction constant k
Reaction rate can also be affected by temperature but that's an entirely different equation. The Arrhenius equation.
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What are four ways that a chemist can control the rates of chemical reactions?
By changing concentration, temperature; pressure and volume (in the case of gases).
What are four ways chemists can control the rates of chemical reactions?
Varying the following parameters:- temperature- pressure- concentraton- stirring
What are the three ways discussed in our lessons that chemists can control the rates of chemical reactions?
The reaction rate is dependet on temperature, pressure and reactants concentration.
What are four ways that chemists control the rates of chemical reactions?
Increase in Surface area,Increase in temperature,Increase in concentration,and the presence of catalysts or inhibitors.
What ways do chemical reactions between substances affect chemical bonds?
dooodoo
Ways in which chemical reactions can be identified?
Well there are double and single displacement reactions, combustion and decomposition.
What are the disadvantages of using ionised water?
When performing chemical reactions you want your solvent to be as pure as possible. Ionized water is water that contains ions due to impurities that are dissolved in it. This can interfere with chemical reactions in all sorts of ways.
What do chemical changes always take in or give off?
Some reactions give off heat (exothermic), others absorb heat (endothermic). All reactions increase entropy.
What happenes to chemical bonds during chemical reaction?
In a chemical reaction, the bonds of the reactants are broken. The atoms will rearrange and new bonds will form.
How can chemical change be reserved?
Reversible changes are the chemical reactions that can be reversed, however most are non reversible. The ones that can be reversed is because the reaction can flow both ways.
How is a chemical bond usually broken?
Chemical bonds are both formed and broken during chemical reactions. For example, bonds are formed and broken in the synthesis reaction 2H2 + O2 = 2H2O. The bonds in both diatomic oxygen and hydrogen are broken, forming new bonds to form a water molecule.
What do most atoms undergo combining in ways that cause their atoms to become more?
Most atoms tend to undergo chemical reactions combining in ways that cause their atoms to become more stable
