Structural isomerism is based on the existence of different molecular
structures formed by the same elements.
The statement that is not correct with respect to structural isomers is; <u>All </u>
<u>structural isomers show hydrogen bonding</u>.
Reason:
Structural isomers are isomers that have different molecular structures but
the same molecular formula. They are referred to as constitutional isomers
Therefore;
- The empirical formula which is obtainable from the molecular formula is the same for structural isomers.
- The structural formula of structural isomers are different
- Structural isomers that are functional isomers have different chemical properties.
However;
- Structural isomers that are linkage isomers may not have hydrogen bonding.
Therefore, the statement that is not correct with respect to structural isomers is; <u>All structural isomers show hydrogen bonding</u>.
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<em>The question options are;</em>
<em>The same empirical formula among structural isomers</em>.
<em>Different physical and chemical properties can be possessed by structural isomers</em>.
<em>Structural isomers have different structural formulas</em>.
<em>Hydrogen bonding is shown in all structural isomers</em>.
<em>All the above statements are correct</em>.
Hey there!:
mass = 41.2 g
Volume = 8.2 cm³
Therefore:
D = m / V
D = 41.2 / 8.2
D = 5.02 g/cm³
Answer:
<u>The last statement describes the correct inozation of water:</u>
Pure water at 25ºC:
- self-ionizes to form an equilibrium system in which:
Explanation:
It has been proven that <em>pure wate</em>r slightly conducts electricity. This fact, explained by the Arrhenius model of acids, would mean that pure water contains ions.
Since such ions are spontaneoulsy produced by the water molecules, this phenomenum is called <em>self-ionization of water</em>.
The equilibrium equation that represents the self-ionization of water is:
The expression for the equilibrium constant is:
As per the stoichiometry:
The equilibrium constant for the self-ionization of water has been determined at several temperatures. At 25ºC it is equal to 1.0×10⁻¹⁴.
Then by solving the equation you can find the concentrations of the ions:
Hence, we have proved that pure water self-ionizes to form an equilibrium system in which:
Answer:
5.702 mol K₂SO₄
General Formulas and Concepts:
<u>Atomic Structure</u>
- Reading a Periodic Table
- Compounds
- Moles
<u>Stoichiometry</u>
- Using Dimensional Analysis
Explanation:
<u>Step 1: Define</u>
[Given] 993.6 g K₂SO₄
[Solve] moles K₂SO₄
<u>Step 2: Identify Conversions</u>
[PT] Molar Mass of K: 39.10 g/mol
[PT] Molar Mass of S: 32.07 g/mol
[PT] Molar mass of O: 16.00 g/mol
Molar Mass of K₂SO₄: 2(39.10) + 32.07 + 4(16.00) = 174.27 g/mol
<u>Step 3: Convert</u>
- [DA] Set up:
- [DA] Divide [Cancel out units]:
<u>Step 4: Check</u>
<em>Follow sig fig rules and round. We are given 4 sig figs.</em>
5.7015 mol K₂SO₄ ≈ 5.702 mol K₂SO₄