Podcast
Questions and Answers
What is the definition of the solubility of an ionic compound?
What is the definition of the solubility of an ionic compound?
- The maximum mass of an ionic compound that can dissolve in 1L of solvent. (correct)
- The rate at which a compound dissolves in a solvent.
- The volume of solvent required to dissolve a compound.
- The minimum mass of a compound that can dissolve in a solvent.
In what units is the solubility of a substance expressed?
In what units is the solubility of a substance expressed?
- mol/L
- S/m
- volts
- g/L (correct)
What is the charge of a cation?
What is the charge of a cation?
- Negative
- Positive (correct)
- Neutral
- Variable depending on the element
What is the overall charge of an ionic compound?
What is the overall charge of an ionic compound?
What is the formula relating ionic concentration [X], amount of substance n, and volume V?
What is the formula relating ionic concentration [X], amount of substance n, and volume V?
What are the units for ionic concentration [X] when 'n' is in moles and 'V' is in liters?
What are the units for ionic concentration [X] when 'n' is in moles and 'V' is in liters?
What is the formula relating mass concentration $C_{m,x}$, mass $m_x$, and volume V?
What is the formula relating mass concentration $C_{m,x}$, mass $m_x$, and volume V?
What is the typical unit for $C_{m,x}$ (mass concentration)?
What is the typical unit for $C_{m,x}$ (mass concentration)?
What quantity characterizes the ability of a chemical species to conduct electrical current?
What quantity characterizes the ability of a chemical species to conduct electrical current?
What instrument is used to measure the conductivity of a solution?
What instrument is used to measure the conductivity of a solution?
Flashcards
Solubility of an ionic compound
Solubility of an ionic compound
The maximum amount of an ionic compound that can dissolve in 1 liter of solvent. Expressed in g/L.
Definition of an ion
Definition of an ion
A chemical species with an electrical charge, either positive (cation) or negative (anion).
Ionic compound
Ionic compound
A chemical species composed of a cation and an anion, electrically neutral overall.
Relationship between concentration, amount, and volume
Relationship between concentration, amount, and volume
Signup and view all the flashcards
Mass concentration equation
Mass concentration equation
Signup and view all the flashcards
Conductivity of a solution
Conductivity of a solution
Signup and view all the flashcards
Factors affecting conductivity
Factors affecting conductivity
Signup and view all the flashcards
Definition of equivalence
Definition of equivalence
Signup and view all the flashcards
Study Notes
- Fiche Mémo - Chapitre 7 - Comment la qualité de l'eau est-elle contrôlée ?
Solubilité d'une espèce chimique
- Définition: masse maximale d'un composé ionique qui peut être dissoute dans 1L de solvant.
- Unité: g.L⁻¹
Ion
- Définition: espèce chimique chargée positivement (cation) ou négativement (anion).
Composé ionique
- Définition: espèce chimique composée d'un cation et d'un anion, électriquement neutre.
- Exemple: BaCl₂ → Ba²⁺ + 2Cl⁻.
Concentration ionique en quantité de matière
- Relation: [X] = n/V
- Unités: mol.L⁻¹
Concentration ionique en masse
- Relation: Cm,x = mx/V
- Unités: g.L⁻¹
Conductivité d'une solution
- Définition: grandeur physique qui caractérise l'aptitude d'une espèce chimique à conduire le courant électrique.
- Unités: S.m⁻¹ (siemens/m)
Mesure de la conductivité
- Appareil: conductimètre
Facteurs influençant la conductivité d'une solution
- Nature des espèces
- Concentration
- Température
Dosage conductimétrique
- Principe: Détermination de la concentration d'un ion dans une solution en le faisant réagir avec une solution de concentration connue (solution titrante), mesure de la conductivité tout au long du dosage.
Équivalence
- Définition: l'équivalence est atteinte lorsque les réactifs sont introduits dans les proportions stœchiométriques.
Savoir-faire mathématique
- Manipuler une formule du type A = k x B pour exprimer A, k ou B en fonction des deux autres grandeurs.
- Manipuler une formule du type A/a = B/b pour exprimer A ou B en fonction des trois autres grandeurs.
- Conversions d'unités : de mL à L, de mg à g.
- Faire une application numérique à la calculatrice.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.