
What does negative delta G mean?
Answer
428.7k+ views
Hint: The amount of usable energy (energy that can do work) in a system is measured by its Gibbs free energy (G). During a reaction, the change in Gibbs free energy provides useful information about the reaction's energetics and spontaneity (whether it can happen without added energy).
Complete answer:
The change in the Gibb’s free energy can be written as:
In other words, is the change in free energy of a system as it transitions from one state to the next, such as all reactants to all products. The maximum usable energy released (or absorbed) in transitioning from the initial to the final state is represented by this value. Furthermore, the sign (positive or negative) indicates whether a reaction will occur spontaneously, that is, without the application of additional energy.
is calculated using a set of values that scientists can measure: a reaction's enthalpy and entropy changes, as well as the temperature at which the reaction occurs:
Exergonic reactions are those that have a negative and release free energy. The reactants, or initial state, have more free energy than the products, or final state, with a negative . Because they can occur without the addition of energy, exergonic reactions are also known as spontaneous reactions.
Note:
It is important to understand that the term "spontaneous" has a very specific meaning in this context: it means that a reaction will occur without the application of additional energy, but it doesn't specify how quickly the reaction will occur. It could take seconds for a spontaneous reaction to occur, but it could also take days, years, or even longer.
Complete answer:
The change in the Gibb’s free energy can be written as:
In other words,
Exergonic reactions are those that have a negative
Note:
It is important to understand that the term "spontaneous" has a very specific meaning in this context: it means that a reaction will occur without the application of additional energy, but it doesn't specify how quickly the reaction will occur. It could take seconds for a spontaneous reaction to occur, but it could also take days, years, or even longer.
Latest Vedantu courses for you
Grade 11 Science PCM | CBSE | SCHOOL | English
CBSE (2025-26)
School Full course for CBSE students
₹41,848 per year
Recently Updated Pages
Master Class 11 Business Studies: Engaging Questions & Answers for Success

Master Class 11 Economics: Engaging Questions & Answers for Success

Master Class 11 Accountancy: Engaging Questions & Answers for Success

Master Class 11 Computer Science: Engaging Questions & Answers for Success

Master Class 11 English: Engaging Questions & Answers for Success

Master Class 11 Maths: Engaging Questions & Answers for Success

Trending doubts
The flightless birds Rhea Kiwi and Emu respectively class 11 biology CBSE

1 litre is equivalent to A 1000mL B 100cm3 C 10mL D class 11 physics CBSE

A car travels 100 km at a speed of 60 kmh and returns class 11 physics CBSE

Name the Largest and the Smallest Cell in the Human Body ?

Explain zero factorial class 11 maths CBSE

In tea plantations and hedge making gardeners trim class 11 biology CBSE
