Titrant Study guides, Class notes & Summaries

In the 18th century, the strength (actually the concentration) of _____ samples was determined by noting the amount of potassium carbonate, K₂CO₃, which had to be added, a little at a time, before bubbling ceased. The greater the weight of potassium carbonate added to reach the point where the bubbling ended, the more concentrated the _______. Vinegar, vinegar The test for vinegar concentration: acetic acid reacts with potassium carbonate according to the following equation: 2CH₃CO₂...

General Chemistry Semester 1 Exam Review | Latest Update | 2024/2025 | Graded A+ What is the difference between a heterogeneous and a homogeneous mixture, and how can each be separated? A heterogeneous mixture has visibly different components and can be separated by physical means such as filtration or decantation, while a homogeneous mixture has a uniform composition throughout and may require more complex methods like distillation for separation. How do you determine the empiric...

CHEM 207 REVIEW EXAMS QUESTIONS AND ANSWERS Practice questions for the exam with solutions. For you to do well on the exam, please work on the questions before looking at the solutions. If you find an error, let me know so I can let everyone know. REMEMBER THE EXAM IS ON Monday, Sept 28th on Top Hat. The exam will have 20 questions and only one hour. Studying the lecture ppts and lecture questions would also be helpful. Lecture 1A questions: Density and stat analysis, Q and T tables, % Tole...

Chem 210 Exam 4 study guide. what is an acid base titration curve? a plot of pH versus volume of titrant added What are some examples of polyatomic cations NH4+, H3O+ what are some examples of polyatomic anions CH3COO-, CN-, OH-, CIO3-, NO2-, NO3-, MnO4-, CO3-2, CrO42-, Cr2O7-2, O-2, SO4-2, PO4-3 adding a common ion ___ solubility decreases oxidation is ____ loss of electrons reduction is ____ gain of electrons General rules for assigning oxidation number As E cell becomes more p...

Chem Final (Straighterline) [C] Questions and Answers | Latest Version | 2024/2025 | Graded A+ What is the definition of a limiting reactant in a chemical reaction? The limiting reactant is the substance that is completely consumed first and thus determines the amount of product formed. How do you calculate the percent yield of a chemical reaction? Percent yield = (actual yield / theoretical yield) × 100% What is the difference between an ionic bond and a covalent bond? ...

Here are the key points I would highlight in the assignment: P4/P6 - Practical Work Measuring cell potentials for various half-cell combinations (Zn/Cu, Zn/Pb, Pb/Cu) Calculating standard cell potentials and comparing to measured values Titrations: Fe2+/MnO4-, Na2S2O3/KIO3 standardization, I2/Cu2+ determination Observations and calculations for titration volumes and concentrations Oxidation of alcohols (ethanol, ethanoic acid) with acidified K2Cr2O7 Health & Safety Proper PPE (lab ...

What is a back titration? - ️️A titration in which a known excess of titrant is added and then the excess is carefully titrated. What is the balanced chemical equation for the complete reaction between CO3 2- and HCl? Between KHP and NaOH? SHOW THE NET IONIC EQUATIONS. - ️️2HCl(aq) + CO3 2-(aq) ---> H2O(l) + CO2(g) + 2Cl-(aq) 2H+(aq) + CO3 2-(aq) ---> H2O(l) + CO2(g) KHP(aq) + NaOH(aq) ---> NaKP(aq) + H2O(l) KHP(aq) + OH-(aq) ---> KP-(aq) + H2O(l) Calculate the total ...

CHEM 210 Midterm 2 Exam Questions and Answers All Correct Identify the equivalence point on the titration curve. Define the end point of a titration. - Answer-The equivalence point of a titration is reached when the moles of titrant added are stoichiometrically equal to the moles of analyte present in solution. This is observed on the titration curve as the point in the center of the steepest part of the curve, which correlates to the greatest concentration (pH) change per volume of add...

Solution A homogeneous mixture composed of at least one solvent and one solute Solvent A substance which dissolves a solute Solute A substance which is dissolved by a solvent Homogeneous A mixture with one phase Heterogeneous A mixture with more then one phase Miscible Liquids that mix in all proportions and no maximum concentration Immiscible Liquids that form separate layers Intramolecular The attractive force between atoms within compounds Intermolecular The attractive force between m...

What does an analytical chemist do? correct answers Identifying what is in an unknown is called qualitative analysis. Identifying how much is present is called quantitative analysis. Describe the steps in a chemical analysis. correct answers 1) What do you want to know? -What substance (analyte) are you looking for? 2) Select appropriate procedures -Literature Search -New Procedure 3) Gathering Representative Samples -Random heterogeneous material-Segregated heterogeneous material 4) Prepari...