Questions: Using data in the Table of Standard Electrode Potentials shown in a previous problem, devise and represent Galvanic Cells made of the following redox couples, and calculate their EMF: (a)    (Fe2+, Fe) and (Ag+, Ag);  (b)   (Cl2, 2Cl-) and (Cu2+, Cu) Solution: (a)

Question: In problem # 35, the notion of Electrode Potential has been explained. From that, do explain what's an Electrochemical Cell/Galvanic Cell Answer In Problem # 35, we have seen that to measure or determine the Standard Electrode Potential of a given Electrode, the Electrode

Questions: 1- Explain the concept of Electrode Reduction/Oxidation Potential. 2- Explain the concept of Standard Electrode Reduction/Oxidation Potential Answers: 1- The Potential, as a name, according to the Dictionary, means: Latent qualities or abilities that may be developed and lead to future

Question: Without going into scientific and technical details, briefly explain the difference between the following terms: Electrochemical cell, Galvanic (Voltaic) cell, Electrolytic cell? Answer: - The term Electrochemical cell can be used to indicate any set up where (i) a redox chemical reaction takes

Question: Electrochemistry is one of important Chapters of Chemistry. What does distinguish it from the other chapters or domains of chemistry? Answer: Electrochemistry is a branch of Chemistry that deals with chemical reactions that, either produce electricity or need external electrical energy for them

Questions: 1.Devise a table where you compare the main properties of s-block and d-block metals. 2. Briefly give the properties of the other two categories, i.e. metalloids and nonmetals 1-      Comparison of the properties of s-Block and d-Block metals Properties s-Block metals

Answers to the questions: 1-      Describe how a volumetric titration is done. 2-      Given a sample solution of HCl(aq) of unknown concentration; if 25.00 mL of that solution are neutralized by 20.45 mL of NaOH[0.10M]. What’s the concentration

Separating mixtures into their components is part of Analytical chemistry, and one of the tasks of a chemist. Mixture Objective Suggested Separation Techniques Choose the best Separation Technique Underlying Principle or guiding Criteria Water (H2O) + Carbon Tetrachloride (CCl4), immiscible liquids Separation and collection of

Question: There are two categories in Analytical Chemistry; what are they? Explain, and for each category give at least three analytical techniques used. Analytical chemistry has two branches: Qualitative analysis and Quantitative analysis (i) Qualitative analysis: is about the determination of the nature or

Measurements can be done directly using appropriate instruments, e.g. length, temperature, pressure, weight, etc.… Other measurements can be gotten indirectly from other measurements by calculation; e.g. surface area, density (weight/volume), etc.… Those use derived units, such g/ml for the density.

Accuracy, precision, error, significant and non-significant figures Questions:1. Since Chemistry is a Science of measurement, we talk of accurate and precise measurement. Explain those concepts, showing the difference. 2. Give a scientific explanation of error in a measurement. 3. In measurement and related

1. Explain or define the concept of concentration. 2. Explain different ways, if any, of expressing the concentration. Explanations 1. Concentration: is the amount or quantity of a dissolved substance, solute, per unit quantity of solution or mixture. The symbol of concentration is C.

Like dissolves like. This rule allows us to predict or explain why a solute may be soluble in one solvent and be insoluble in another. For example. Ethanol is soluble in water because both compounds are polar compounds; but benzene is insoluble in water

1. What’s a salt and how is it formed. 2. What is an Electrolyte, and what is a Non-electrolyte? Illustrate by examples. 3. What’s the difference between a Strong Electrolyte and a Weak Electrolyte? Illustrate by examples. 4. Are Salts strong or

One important category of chemical reactions is the reactions of acids and bases, called acid-base reactions or acid-base neutralization reactions. Questions: 1. What is an acid?  What is a base? Give an example of each to illustrate. 2. Why do we call an acid-base

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In previous problems, we have seen what a chemical reaction is and the conditions and factors that affect a chemical reaction. There are many kinds of chemical reactions that can be classified in a few categories or types of chemical reactions. Question: Name the

Explain the concepts of: The rate of a chemical reactionThe rate-determining or rate-limiting step of a chemical reactionThe difference between the “limiting reactant” concept and the “rate-limiting step” concept.Solution: Introduction: What a balanced chemical equation tells us and what it doesn’t tell

Explain the meaning of “stoichiometric amounts or equivalent amounts of reactants” in a chemical reaction. Illustrate by an example Explain the concept of “limiting reactant”. Illustrate an example.Solution: The terms “stoichiometric amounts” and “equivalent amounts” of reactants are often heard when dealing with

There is a chapter or area in Chemistry called “Stoichiometry”. Explain what it is about. A gas cylinder contains 1,000 g of methane gas. a. Write a balanced chemical equation for the combustion of methane, knowing that methane burns in oxygen to give

October 23, 2021, on a socio-platform of Chemistry, we were reminded by a friend who forwarded us a Happy Mole Day wish. October 23(6.02 am-6.02 pm), each year, is Mole Day. This reminded me of a conversation I had with a

Based on the definition of a chemical reaction, think about any chemical reaction and; Write that chemical reaction in words.Translate the above chemical reaction into symbols.Which principles do you follow in writing a chemical reaction so that any Chemist who sees it

Problem 17 was about the factors that affect the change process of matter, can you expand a little more about how this works? Solution: To understand how the different factors that drive the changes of matter work, let’s start by a comparison. In

In the previous section, our study was focused on matter, its composition and how it is made and some of its properties. The next section will focus on the changes that matter can undergo. We live in an environment where many and different processes

In problem 10 part II, paragraphs a) to g), we have talked about Covalent bonds. We saw Sigma (σ) and Pi (π) bonds and their molecular orbitals. Those bonds are the most common, particularly in Organic Chemistry. But there exist other less common types