Give the definition of heat of neutralization.
Answer (2)
Heat of neutralization is the heat evolved when one mole of H + ions from an acid reacts with one mole of O H − ions from a base.
This reaction forms one mole of water ( H 2 O ).
The process is exothermic, releasing heat.
The heat of neutralization is always a negative value, indicating energy release as heat. The definition of heat of neutralisation is: \boxed{\text{Heat evolved when one mole of } H^+ \text{ reacts with one mole of } OH^- \text{ to form one mole of } H_2O}} .
Explanation
Understanding the Question The question asks for the definition of heat of neutralization. We need to provide a clear and concise definition suitable for a student.
Defining Heat of Neutralization Heat of neutralization is defined as the amount of heat evolved when one mole of hydrogen ions ( H + ) from an acid reacts completely with one mole of hydroxide ions ( O H − ) from a base to form one mole of water ( H 2 O ). This reaction is an exothermic process, meaning it releases heat.
Exothermic Nature Therefore, the heat of neutralization is always a negative value, indicating the release of energy in the form of heat.
Examples
Heat of neutralization is a fundamental concept in chemistry with practical applications. For example, in wastewater treatment, understanding the heat released during neutralization reactions helps in designing efficient and safe processes. If acidic or basic waste needs to be treated, the heat generated during neutralization must be managed to prevent overheating or damage to equipment. Similarly, in industrial processes involving acid-base reactions, knowing the heat of neutralization is crucial for maintaining optimal reaction conditions and ensuring safety.
Heat of neutralization is the heat released when one mole of H + ions reacts with one mole of O H − ions to form one mole of water, typically exhibiting an energy release of about − 57.5 k J / m o l . This reaction is exothermic, indicating a release of heat. It's important in applications like wastewater treatment and industrial processes.
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