For an irreversible chemical reaction, the concentration of the products with time

Options

A. increaes
B. decreases
C. does not change
D. some more data required

Explanation

To analyze the behavior of product concentration over time for an irreversible chemical reaction, we can follow these steps:

### Step 1: Understand the Nature of Irreversible Reactions
Irreversible reactions are those in which the reactants are converted into products, and once the products are formed, they do not revert back to reactants. This means that the reaction proceeds in one direction only.

**Hint:** Remember that in irreversible reactions, the conversion of reactants to products is a one-way process.

### Step 2: Define Initial Conditions
At the start of the reaction (time = 0), we assume the concentration of the reactant is at its maximum. For example, if we start with 100 units of reactant, the concentration of the product is 0 at this point.

**Hint:** Initial concentration of products is always zero in irreversible reactions.

### Step 3: Observe Changes Over Time
As time progresses, the reactant concentration decreases while the product concentration increases. For instance, after 5 seconds, if the reactant concentration decreases to 92, then the product concentration would have increased to 8.

**Hint:** Track the changes in concentrations; the reactant decreases while the product increases.

### Step 4: Complete Consumption of Reactants
Eventually, the reactants will be completely consumed. If we assume the reaction goes to completion, after a certain period (e.g., 1 hour), the concentration of the reactant will be 0, and the concentration of the product will be equal to the initial concentration of the reactant (100 in this case).

**Hint:** The final state of the reaction shows that all reactants are converted to products.

### Step 5: Conclusion on Product Concentration
From the observations, we can conclude that as time increases, the concentration of the product increases continuously until it reaches its maximum value when the reactants are fully consumed.

**Hint:** The concentration of products in an irreversible reaction always increases over time.

### Final Answer
The concentration of the products increases with time in an irreversible chemical reaction.