Calculate the vapour pressure of Zn over a Cu-Zn binary solution of N, = 0.3 at 1,280K.

1.The activity coefficient of zinc in liquid zinc-copper alloys in the temperature range 1,070 – 1,300K can be expressed as follows : RTlny, = -31,6OON& where R = 8.3 14 J moT’K-‘. Calculate the vapour pressure of Zn over a Cu-Zn binary solution of N, = 0.3 at 1,280K. The vapour pressure of pure liquid zinc is given by l0gP = – 4J620 – 2.26iogT+ 12.34 (ton)

2. A container having three compartments contains 1 mole of gas A, 2 moles of gas B and 3 moles of gas C, respectively, at the same temperature and pressure (298K and 1 am). The partitions are lifted and the gases are allowed to mix. Calculate the change in the Gibbs free energy G’? Assume the gases behave ideally.

find the cost of your paper

Calculate the maximum achievable bridge out-of-balance voltage for an applied torque T of 103 N m given the following

Four strain gauges, with specification given below, are available to measure the torque on a cylindrical shaft 4 cm in diameter connecting a motor and load. (a) Draw clearly labelled….

Find the gain and phase characteristics of the maintaining amplifier.

A solid-state capacitive humidity sensor has a capacitance given by: C = 1.7 RH + 365pF where RH is the percentage relative humidity. The sensor has an associated parallel resistance….

calculate the mean velocity of the gas at maximum flow rate

A pitot tube is used to measure the mean velocity of high pressure gas in a 0.15 m diameter pipe. At maximum flow rate the mean pitot differential pressure is….