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2) Ethiopian General Secondary Education Certificate (EGSEC, done after grade 10) 3) Ethiopian University Entrance Examination (EUEE) results or Ethiopian Secondary School Leaving Examination The second phase of secondary education leads to two field branch that students choose one of them: natural and social science branch.
English chemist John Daniell (left) and physicist Michael Faraday (right), both credited as founders of electrochemistry. Electrochemistry is the branch of physical chemistry concerned with the relationship between electrical potential difference and identifiable chemical change.
In March 2022, Amhara Regional Government Education Bureau sent a team to the agency to request an explanation from the Ministry of Education about grading "errors" in the national examination. 20,000 complaints have been filed against the result of the grade 12 leaving examination, in which the government selects students to join 43 universities across the country.
Electrochemiluminescence or electrogenerated chemiluminescence (ECL) is a kind of luminescence produced during electrochemical reactions in solutions. In electrogenerated chemiluminescence, electrochemically generated intermediates undergo a highly exergonic reaction to produce an electronically excited state that then emits light upon relaxation to a lower-level state.
A galvanic cell (voltaic cell), named after Luigi Galvani (Alessandro Volta), is an electrochemical cell that generates electrical energy from spontaneous redox reactions. [3]
Standard hydrogen electrode scheme: 1) Platinized platinum electrode, 2) Hydrogen gas, 3) Acid solution with an activity of H + = 1 mol/L, 4) Hydroseal for prevention of oxygen interference,
Electrochemical engineering is the branch of chemical engineering dealing with the technological applications of electrochemical phenomena, such as electrosynthesis of chemicals, electrowinning and refining of metals, flow batteries and fuel cells, surface modification by electrodeposition, electrochemical separations and corrosion.
A well-known electrosynthesis is the Kolbe electrolysis, in which two carboxylic acids decarboxylate, and the remaining structures bond together:; A variation is called the non-Kolbe reaction when a heteroatom (nitrogen or oxygen) is present at the α-position.