Question

1.Acid is added to a beaker containing crushed marble.

What effect does stirring this mixture have on the system?


A.the number of particle collisions increases

B.the energy of the collisions increases

C.the surface area of the particles increases

Answer 1

According to collision theory, more is the number of collisions between molecules of reactants more will be the rate of reaction.

Therefore, when we increase stirring in a beaker then it will create disturbance between the reactant molecules due to which there will be increase in number of collisions.

Hence, we can conclude that effect of stirring the given mixture on the system will be that the number of particle collisions increases.

Answer 2

When acid is added to a beaker containing the crushed marble, stirring that mixture leads to A. Increasing the number of particle collisions.

Explanation:

• When an acid like 'hydrochloric acid' is added to a beaker full of crushed marbles, a chemical reaction takes place and carbon dioxide gas is released.
• However, this gas release occurs when the marble reacts with the acid molecules and a 'chemical reaction occurs'.
• This ensures that particle collision is occurring, and when any solution is stirred the molecules of that solution get in an active state thereby rising the 'number of collisions' and hence it happened in this case too.

Learn more about acids:

List of Strong acids and strong bases atleast 30

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Acids dissolve in water and produce positively charged ions. Draw the structure of these positive ions.

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