Hydrochloric acid and Sodium thiosulfate produce a precipitate. how does INCREASING the concentration of reactants affect the rate of reaction?

Question

a
It increased the rate of the reaction
b
It slowed down the rate of reaction
c
It did not affect the rate of reaction

Answer 1

The correct answer is:

a. It increased the rate of the reaction.

In general, increasing the concentration of reactants leads to an increased rate of reaction. This is because a higher concentration means there are more molecules of reactants in a given volume, which leads to a higher frequency of collisions between reactant molecules. As a result, the likelihood of successful collisions increases, leading to a faster reaction rate.

Answer 2

which glass had the faster reaction rate?

a
The glass with the vitamin added in powder form
b
The glass with the vitamin added as a whole tablet

Answer 3

The correct answer is:

a. The glass with the vitamin added in powder form.

When a substance is in powdered form, it has a greater surface area compared to a whole tablet. This increased surface area allows for more collisions between the reactants, which generally leads to a faster reaction rate. In contrast, a whole tablet would dissolve more slowly and have a reduced contact area, resulting in a slower reaction rate.

Answer 4

The powder had greater surface area than the tablet, therefore had more area to react faster.

True
False

Answer 5

True.

The statement is correct. The powdered form of a substance has a greater surface area compared to a whole tablet. This increased surface area allows for more contact with the other reactants, leading to more collisions and ultimately a faster reaction rate.

Answer 6

the concentration, increases the reaction rate.

Word Bank:
Decreasing Increasing
Blank 1:

Answer 7

Blank 1: Increasing

The completed statement would be: "The concentration increases the reaction rate."

Answer 8

What are 3 ways you can increase the rate of reaction in experiments?

Answer 9

Here are three ways to increase the rate of reaction in experiments:

1. Increase Concentration: Increasing the concentration of reactants raises the number of particles in a given volume, leading to more frequent collisions among reactant molecules, which can accelerate the rate of reaction.

2. Increase Temperature: Raising the temperature provides reactant molecules with more kinetic energy, which increases their speed. This results in more frequent and more energetic collisions, leading to an increased rate of reaction.

3. Increase Surface Area: For solid reactants, breaking them into smaller pieces (such as using a powder instead of a whole solid) increases the surface area available for reaction. This allows more molecules to collide and react simultaneously, thereby speeding up the reaction rate.

Additionally, using a catalyst can also increase the reaction rate without being consumed in the process, but that is an additional method beyond the three you've requested.