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marishachu [46]
3 years ago
6

In principle, the equilibrium in the dehydration of an alcohol could be shifted to the right be removal of water. Why is this ta

ctic not a good option for the dehydration of 4-methyl-2-pentanol and cyclohexanol

Chemistry
1 answer:
Trava [24]3 years ago
3 0

Answer:

See explanation

Explanation:

In this case, we have to remember that if we want to remove water from the reaction vessel we have to heat the vessel. So, we can convert the liquid water into <u>gas water</u> and we can remove it from the vessel. In this case, the products of dehydration for both molecules are <u>(E)-4-methylpent-2-ene</u> and <u>cyclohexene</u> with boiling points of <u>59.2 ºC</u> and <u>89 ºC</u> respectively. The boiling point of water is <u>100 ºC</u>, therefore if we heat the vessel the products and water would leave the system, and the products would be lost.

See figure 1

I hope it helps!

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Q3. A student added water to calcium oxide to make calcium hydroxide
galina1969 [7]

26.4 kg of calcium hydroxide (Ca(OH)₂)

Explanation:

We have the following chemical reaction:

CaO + H₂O → Ca(OH)₂

molecular weight of Ca(OH)₂ = atomic mass of Ca × number of Ca atoms + atomic mass of O × number of O atoms + atomic mass of H × number of H atoms

molecular weight of Ca(OH)₂ = 40 × 1 + 16 × 2 + 1 × 2 = 74 g/mole

molecular weight of CaO = atomic mass of Ca × number of Ca atoms + atomic mass of O × number of O atoms

molecular weight of CaO = 40 + 16 = 56 g/mole

number of moles = mass / molecular weight

number of moles of CaO = 20 / 56 = 0.357 kmoles

Taking in account the chemical reaction we devise the following reasoning:

if        1 kmole of CaO produces 1 kmole of Ca(OH)₂

then   0.357  kmoles of CaO produces X kmoles of Ca(OH)₂

X = (0.357 × 1) / 1 = 0.357 kmoles of Ca(OH)₂

mass = number of moles × molecular weight

mass of Ca(OH)₂ = 0.357 × 74 = 26.4 kg

Learn more about:

number of moles

brainly.com/question/10165629

brainly.com/question/9081560

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6 0
2 years ago
Anna stated that ionic compounds have high melting points and low boiling points. She said that this demonstrates that ionic com
Ainat [17]

Answer:

The answer to your question is: letter A

Explanation:

a.Strong electrical forces will make ionic compounds have high boiling points.  This option is correct because ionic bonds are strong which makes substances have high boiling points.

b.Strong electrical forces will make ionic compounds have weak bonds.  This option is false, ionic compounds have strong bonds.

c.A low amount of energy is needed to break the bonds in ionic compounds.  The high amount of energy is needed to break ionic bonds.

d.Gravitational forces hold the bonds together in ionic compounds. Gravitational forces do not affect the ionic compounds.

8 0
3 years ago
Read 2 more answers
What best describes the location of an atom's electrons?
bogdanovich [222]
The common way electrons are found in shells or orbitals that surround the nucleus of an atom.I hope it helped
5 0
3 years ago
Read 2 more answers
Assuming you start with 10.0 g of zinc and 10.0 g hydrochloric acid, identify the limiting reagent and determine what mass of th
Liula [17]
The balanced chemical reaction for the substances given would be as follows:

Zn + 2HCl = ZnCl2 + H2

We are given the amounts of the reactants used in the reaction. We use these amounts to determine which is the limiting and excess reactant. We do as follows:

10 g Zn (1 mol / 65.38 g) = 0.1530 mol
10 g HCl (1 mol / 36.46 g) =  0.2743 mol

From the the stoichiometric ratio which is 1 is to 2, the limiting reactant would be hydrochloric acid and the excess would be zinc metal.

Mass of zinc that remains = 0.1530 - (0.2743 / 2) = 0.0159 g Zn 
5 0
3 years ago
Balance the Following Equations: SiCl4 + H2O = SiO2 + HCl
dimaraw [331]
The answer would be D.

SiCl4 + 2H2O → SiO2 + 4HCl (balanced equation)
5 0
2 years ago
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