Answer:The mechanism of the formation of 4-nitrophenyl phenyl ether include the electrophilic substitution in phenol and the nitration of chlorobenzene.
Explanation:
To prepare the 4-nitrophenyl phenyl ether appropriate equivalent of aqueos NaOH is added to absolute phenol, dissolved gives a Phenoxide ion aqueous and is then added.
After the addition of the appropriate mole of chlorobenzene, to the mixture of HNO3 and H2SO4 is heated under reflux with stirring and exclusion of moisture for 5 hours. The alcohol is distilled off from the reaction mixture to a substantial extent through a 20-cm Vigreux column with stirring and the cooled distillation residue is poured into 100 ml of 5% caustic sodium carbonate; the organic phase is extracted several times with diethyl ether, washed with water, and dried with calcium chloride; the solvent is distilled off, and the residue is fractionated or recrystallized from ethanol. Unchanged phenol can be recovered by acidifying the aqueous alkaline solution and extracting it with ether.
The yield of 4-nitrophenyl phenyl ether 80%, m.p. 40°C; b.p. 286-287 °C; in the presence of HNO3 and H2SO4
<h3>
Answer:</h3>
11.3 mol Ba(NO₃)₂
<h3>
General Formulas and Concepts:</h3>
<u>Math</u>
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Chemistry</u>
<u>Atomic Structure</u>
- Using Dimensional Analysis
- Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
<h3>
Explanation:</h3>
<u>Step 1: Define</u>
6.80 × 10²⁴ molecules Ba(NO₃)₂
<u>Step 2: Identify Conversions</u>
Avogadro's Number
<u>Step 3: Convert</u>
- Set up:
- Multiply:
<u>Step 4: Check</u>
<em>Follow sig fig rules and round. We are given 3 sig figs.</em>
11.2919 mol Ba(NO₃)₂ ≈ 11.3 mol Ba(NO₃)₂
Answer:
<h2>
<u>W</u><u>ater</u> covers 70 percent of earth's surface.</h2>
Answer:
Oxygen is the oxidizing agent and accept electrons
Explanation:
- Corrosion is an example of a redox reaction which involves both reduction and oxidation process.
- During corrosion a metal loses electrons and becomes oxidized to form a metal ion. Therefore, oxygen is the oxidizing agent since it undergoes reduction by gaining electrons.
- Therefore, during corrosion of iron, iron is the reducing agent and gives electrons, while oxygen is the oxidizing agent and accepts the electrons.
Answer:
If n=1, l can only have the value l=0 and the total number of orbitals is 0. If l=1, ml can be -1,0 or 1 and the total number of orbitals at l=1 is 3.
Explanation:
When solving the radial part of Schrödinger equation, one needs to expand in power series that lead to Laguerre polynomials of the form , being n and l the quantum numbers. As is known, in the Laguerre polynomials the subindex must be greater than or equal to 0, which implies . So if n=1, the only possible value of l is l=0.
Likewise, when solving the angular part, one gets the spherical harmonics can be . Therefore the sublevel l=| has 3 possible orbitals.