The implementation of quantum algorithms on quantum computers has the potential to revolutionize the way we solve chemical problems, including determining molecular ground state energies and reaction mechanisms. This is due to the inherent differences between quantum and classical computers, as well as the unique advantages that quantum algorithms offer.1. Nature of computation: Quantum computers use qubits, which can exist in a superposition of states, as opposed to classical computers that use bits, which can only exist in one of two states 0 or 1 . This allows quantum computers to perform calculations in parallel, potentially solving complex problems much faster than classical computers.2. Quantum algorithms: Quantum algorithms, such as the Quantum Phase Estimation QPE and the Variational Quantum Eigensolver VQE , are specifically designed to take advantage of the unique properties of quantum computers. These algorithms can efficiently compute molecular ground state energies and other properties, which are often intractable for classical computers.3. Scalability: As the size of the chemical system increases, the computational cost of simulating it on a classical computer grows exponentially. This is due to the exponential growth of the Hilbert space, which describes the quantum states of the system. Quantum computers, on the other hand, can potentially handle larger systems more efficiently, as their computational power grows linearly with the number of qubits.4. Accuracy: Quantum computers can provide more accurate results for certain chemical problems, as they can directly simulate quantum mechanical systems without the need for approximations. Classical computers often rely on approximations, such as the Born-Oppenheimer approximation or the use of basis sets, which can introduce errors into the calculations.5. Reaction mechanisms: Quantum computers can potentially provide insights into reaction mechanisms that are difficult to obtain using classical computers. For example, they can simulate the time evolution of quantum states, allowing chemists to study the dynamics of chemical reactions in real-time.However, it is important to note that quantum computers are still in their infancy, and there are several challenges to overcome before they can be widely used for solving chemical problems. These challenges include improving the hardware, developing error-correcting codes, and creating efficient quantum algorithms for various chemical problems. As research in quantum computing progresses, it is expected that quantum computers will play an increasingly important role in chemistry, complementing and potentially surpassing classical computers in certain areas.