Biology 2015 E.C - 2023 G.C 2014 E.C - 2022 G.C Chemistry 2015 E.C - 2023 G.C Civics and Ethical Education 2015 E.C - 2023 G.C English 2015 E.C - 2023 G.C Geography 2015 E.C - 2023 G.C History 2015 E.C - 2023 G.C Physics 2015 E.C - 2023 G.C Chemistry - Grade 12 -2023 G.C Grade 12 students can now access their exam results by visiting the Educational Assessment and Examination Services (EAES) website. Previous1234567891011121314151617Next 20. The energy required to completely separate one mole of a solid ionic compound into gaseous ions is a/an Bond energy Lattice energy Chemical potential Boiling Point 21. Which of the properties of solvents WOULD NOT be affected by the formation of a solution with a non-volatile solute? Freezing Point Chemical identity Chemical potential Boiling Point 22. The partial pressure of acetylene, C₂H₂, in a container is 10 atm at 25°C. What is the solubility in molarity of C₂H₂, assume that C₂H₂ obeys Henry's law? (KH = 1.04 mol/L atm) 10.4 104 0.104 9.62 23. What is the normality of a solution that contains 19.6 g of H₂SO4 in 20 mL of the solution? 10 20 0.01 0.02 24. Which one of the following illustrates an extensive property? If water in two beakers at the same temperature are mixed to make a single quantity of water and the temperature of the combined quantity of water is the same as it was in the two separate beakers. Doubling the volume of a sample also doubles the mass; so the ratio of mass to volume remains the same. If a system is divided into parts and it is found that the property of the complete system has a value that is the sum of the values of the property of all the parts. 2Cu2++4e- → 2Cu is the same as for Cu2++2e- → 2Cu." >The electrode potential at standard condition for the half-reaction 2Cu2++4e- → 2Cu is the same as for Cu2++2e- → 2Cu. Previous1234567891011121314151617Next We have provided these questions from previous years grade 12 Ethiopian Secondary School Leaving Certificate Examination (ESSLCE) exams with the sole purpose of assisting students in their studies and preparations for upcoming exams. Please be aware that these questions are not indicative of future exam content. Good luck with your studies!