Question$-3[15$ marks$]$

Figure $1.$ Shows three reactors linked by pipes. As indicated, the rate of transfer of chemicals

through each pipe is equal to a flow rate $(Q,\frac{m^3}{s})$ multiplied by the concentration of the reactor

from which the flow originates $(c,m\frac{g}{m^3}).$ If the system is at a steady$-$state, the transfer into each

reactor will balance the transfer out.

Develop mass balance equations for the reactors and solve the three simultaneous

linear algebraic equations for their concentrations.

Use LU factorization method to solve the equations. Calculate the corresponding

approximate error

Evaluate how a $50\%$ increase in the load to the first and third buckets impact the

solution $($concentrations$)$

Note: Solution must be done by hand, keep your solution tidy and clear to follow.

Figure. Three reactors are linked by pipes. The rate of mass transfer through each pipe is equal to

the product of the flow $Q$ and concentration $c$ of the reactor from which the flow originates.