Question

obtained Why?
3). Identify more examples from daily life to illustrate the increase
in rate of reaction with the increase in surface area.

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Answer 1

Increased surface area, increased will be the reactivity.

Explanation:-

• Use of yeast for bread dough which rises more quickly.

• Cookies will bake faster at higher temperatures.

• Warm-blooded animals regulate their body temperature so that the biochemical reactions are at a certain rate.

• Lightsticks produce light via a chemical reaction. Reaction runs faster at a higher temperature.

• During the washing of cloths, the surface area of the washing liquid is increased by diluting it in a large bucket and the clothes are allowed to get more space.

• When washing liquid is used the surface area is increased by diluting in a large bucket which gives enough space for the reaction to take place.

Answer 2

Explanation:

Increasing the surface area increases the rate of the reaction because there will be more number of reactant molecules exposed for the reaction This translates to an increase in number of successful collisions per unit time. thus higher rate reaction.

For example consider 6 x 6 x 2 inch brick .The area of the area exposed surfaces of the brick is 4(6x2)+2(6x6)= 120cm^2.