Standard reduction potentials for the half-reactions associated with the electrochemical cell shown above are given in the table below. a. Which of the following is the net ionic equation for the overall reaction that occurs as the cell operates? SOLUTION: In the cell, there are two half reactions. Oxidation(loss of electrons) is on the left…
What is the value of Kb for the formate anion, HCOO–? Ка(HCOOH) = 2.1 × 10-4 Solution:The equation that is needed to solve this problem is Ka*Kb= 1.0 *10-14 (at 25C), where Ka is the equilibrium constant of an acid and Kb is the equilibrium constant of its conjugate base. Let’s plug in the values…
Which intermolecular interaction is predominant between ethylamine (CH3CH2NH2) and CH3OH? A. ion-dipoleB. dipole-dipoleC. hydrogen bondingD. dispersionE. dipole-induced dipole Intermolecular forces are forced of attraction (usually) between molecules. Let’s go over the answer choices to figure out the correct intermolecular forces for CH3CH2NH2 and CH3OH? Ion-dipole = exists between an ionic compound (metal+ nonmetal or metal…
Regents Chemistry Practice Problems : ORGANIC CHEMISTRY Topics include: naming and writing formula of alkanes, alkenes, alkynes, functional groups, organic reactions. REGENTS CHEMISTRY COURSE August 2024 1. 2. 3. 4. 5. June 2024 6. 7. 8. January 2024 9. REGENTS CHEMISTRY COURSE and other topics practice.Regents Chemistry Review with Transformation Tutoring Contact us for a…
A 0.135 M solution of a weak base has a pOH of 2.77. Calculate the Kb of the base. LINKS: Organic Chemistry Tutoring Organic Chemistry Study Guides
In this reaction, alkene reacts with HX where X can be Br, Cl or I. To predict the product easily, you have to turn double bond into single and add X (Cl, Br or I) to the most substituted carbon from the double bond carbons. This follows Markovnikov’s Rule which states that halogen (or another…
Write a balanced equation for the reaction of gaseous carbon monoxide with hydrogen gas to form gaseous methane (CH4) and liquid water. Solution: If the question says solid, we need to write (s) next to the compound, liquid means (l), gaseous means (g) and aqueous means (aq). Gaseous carbon monoxide is CO(g). Gaseous hydrogen is…
Write a balanced equation for the reaction of solid lead(II) sulfide with aqueous hydrobromic acid to form solid lead(II)bromide and dihydrogen monosulfide gas. Solution: If the question says solid, we need to write (s) next to the compound, liquid means (l), gaseous means (g) and aqueous means (aq). The equation is: PbS(s) + HBr(aq) —> PbBr2(s)+…
In a popular classroom demonstration, solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. Write a balanced chemical equation for this reaction. Solution: If the question says solid, we need to write (s) next to the compound, liquid means (l), gaseous means (g) and aqueous means (aq)….
Nitric acid is a component of acid rain formed when gaseous nitrogen dioxide pollutant reacts with gaseous oxygen and liquid water to form aqueous nitric acid. Write a balanced chemical equation for this reaction . Solution: If the question says solid, we need to write (s) next to the compound, liquid means (l), gaseous means…