Dédiée aux matières scientifiques, cette collection prépare sereinement les lycéens au contrôle continu avec l'essentiel du programme du bac pour travailler le cours, des exemples commentés pour ...
L’épreuve de physique-chimie, sur laquelle 34 % des lycéens plancheront le 11 ou le 12 mai, de 14 h à 17 h 30, comporte trois exercices indépendants. Ils traitent des thématiques abordées lors des ...
An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...
An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...
A well-established technique, acid-base titration is an analytical method used to determine the concentration of an unknown acid or base. In practice, it involves adding a solution of known strength ...
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