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The Ethiopian General Secondary Education Certificate Examination (EGSECE) is a nationwide exam in Ethiopia that is given to students after final year of secondary school education. [1] Students take EGSECE usually that would eligible to continue eleventh grade or college in preparatory schools. Since 2001, the Ethiopian Secondary Education ...
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.
Spectroscopic and electrochemical techniques that form the spectroelectrochemistry. Spectroelectrochemistry (SEC) is a set of multi-response analytical techniques in which complementary chemical information (electrochemical and spectroscopic) is obtained in a single experiment.
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.
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 mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
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 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.