Question

Using chemical equations and words, explain why

(1) concentrated acids are used in this reaction and
(2) you were instructed to take care that water not enter the beaker during the reaction.

Answer 1

Concentrated acids are used in a reaction due to their reactivity and ability to control the reaction conditions. Water should not enter the beaker during the reaction to prevent heat splattering and dilution of the acid.

Step-by-step explanation:

A concentrated acid is used in a reaction for a couple of reasons:

1. Reactivity: Concentrated acids are often more reactive than dilute acids, meaning they can react more easily or vigorously with other substances. This can be useful when we want a faster or more complete reaction.
2. Controlled reaction: Using a concentrated acid allows us to control the reaction conditions more effectively. For example, a smaller volume of concentrated acid can be added to control the reaction rate and prevent uncontrolled reactions.

We are instructed to take care that water does not enter the beaker during the reaction because:

1. Heat and splattering: When concentrated acids are mixed with water, a significant amount of heat is released. If water were added to the acid, the water would quickly heat and splatter, potentially causing harm to the person performing the reaction.
2. Dilution: Adding water to a concentrated acid would result in dilution of the acid, affecting the concentration and potentially changing reaction conditions.