EVERYDAY SCIENCE

SCIENCE

PHYSICAL SCIENCES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Most reactions go faster at a higher temperature
A
True
B
False
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -An increase in temperature typically increases the rate of reaction. An increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision (Figure.

Detailed explanation-2: -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.

Detailed explanation-3: -Increasing the temperature increases reaction rates because of the disproportionately large increase in the number of high energy collisions. It is only these collisions (possessing at least the activation energy for the reaction) which result in a reaction.

Detailed explanation-4: -Rate of Reaction The rate of a reaction is the speed at which a chemical reaction happens. If a reaction has a low rate, that means the molecules combine at a slower speed than a reaction with a high rate. Some reactions take hundreds, maybe even thousands, of years while others can happen in less than one second.

Detailed explanation-5: -If the phase of matter (solid, liquid, or gas) of the reactants results in more collisions, the reaction will be faster. Gas molecules move fast, so gases usually react faster than liquids. Liquids move faster than solids, so liquids react faster than solids.

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