BSSE Chemistry 1429 case studies
BSSE Chemistry 1429 · Put your knowledge to work in context.
BSSE Chemistry 1429 is a subject exam used to assess whether a candidate has the working chemistry knowledge expected at the bachelor's level in a Bachelor of Science in Software Engineering (BSSE) programme, where chemistry appears as a supporting science component rather than the main discipline. It suits students who need to clear a chemistry requirement, transfer candidates seeking credit recognition, and graduates refreshing fundamentals before further study. The BSSE Chemistry 1429 case studies are 5 cases and about 2,942 words.
1Calibration Drift and the Magnesium Ribbon
A student determines the percentage of magnesium in a ribbon sample by reacting it with excess 1.00 M HCl and collecting the hydrogen gas over water. The student uses a 50.0 mL burette to measure the HCl, but the burette was not calibrated: its markings are 0.30 mL too high at every reading (i.e., the actual delivered volume is 0.30 mL less than the reading change).
774 words, about 4 min2Buffer Preparation in a Crowded Lab
A student needs to prepare 500.0 mL of a buffer at pH 7.40 using 0.100 M KH2PO4 and 0.100 M K2HPO4 solutions. The lab has only 250.0 mL of 0.100 M KH2PO4 and 150.0 mL of 0.100 M K2HPO4 available.
538 words, about 3 min3Reaction Order from Initial Rates with a Suspect Data Point
A student studies the reaction A + B → C by the method of initial rates. The student performs four experiments at 25 °C and obtains the following data (concentrations in mol/L, initial rate in mol/(L·s)): Experiment 1: [A] = 0.100, [B] = 0.100, rate = 2.50 × 10^-4 Experiment 2: [A] = 0.200, [B] = 0.100, rate = 5.00 × 10^-4 Experiment 3: [A] = 0.100, [B] = 0.200, rate = 2.50 × 10^-4 Experiment 4: [A] = 0.200, [B] = 0.200, rate = 1.00 × 10^-3 The student suspects that Experiment 4 is unreliable because the rate is much higher than expected.
415 words, about 2 min4Electrolysis of Brine with a Limited Power Supply
A student sets up an electrolytic cell to produce chlorine gas from concentrated NaCl solution using inert electrodes. The power supply can deliver a maximum current of 2.00 A and a maximum voltage of 5.00 V.
581 words, about 3 min5Distillation and Purity Assessment of an Ester
A student synthesizes ethyl acetate by Fischer esterification and purifies it by simple distillation. The student collects a fraction boiling at 74–78 °C.
634 words, about 3 min