Final answer:
To convert system [a] to system [b], we replace one equation with itself where the same quantity is added to both sides. This preserves the balance and accuracy of the chemical equation.
The correct option is 2)
Step-by-step explanation:
To convert system [a] into system [b], we need to understand the principles of chemical equation manipulation. The question seems to be asking about different methods of manipulating equations to achieve a new, yet equivalent system.
The correct method, among the provided options, is to replace one equation with itself where the same quantity is added to both sides (option 2). This method maintains the balance of the equation, which is essential in chemistry when dealing with reaction systems, as it obeys the law of conservation of mass.
Manipulations such as swapping only the right-hand sides (option 3) or simply swapping the order of the equations (option 4) do not inherently change the system; these actions would still represent the same underlying chemistry. It is also essential to solve the appropriate equation for the unknown and check the results to see if they are reasonable, ensuring that the manipulated equation still accurately represents the original system.
The correct option is 2)