Glycerol boils at a higher temperature than water. What does this indicate about the attractive forces of glycerol?

Answers

Answer 1

Answer:

The chemical formula for glycerol is HOCH2-CH(OH)-CH2OH while that of water is H-OH. The intermolecular forces in both water and glycerol are the strong H-bonds. However, since there are 3 OH groups/ glycerol molecule vs the one -OH group in water enables glycerol to form more H-bonds when compared to water.

The stronger attractive forces in glycerol causes an increase in its boiling point.

Answer 2

Answer:

Answer: Glycerol has more attractive forces as compared to water.

Explanation:

Boiling point is the temperature at which vapor pressure of the liquid becomes equal to atmospheric pressure.

Boiling point depends on the strength of inter molecular forces.

The molecules of glycerol $(HOCH_2CH(OH)CH_2OH)$ are more strongly bonded through hydrogen bonds as there are three OH groups.

But in water $(H_2O)$ , only on e OH group is present and thus extent of hydrogen bonding is less.

Thus we can conclude that glycerol has more attractive forces as compared to water.

Related Questions

2Na + 2H2O mc012-1.jpg 2NaOH+H2, what mass of Na is required to yield 22.4 L of H2 at STP? (The atomic mass of Na is 22.99 u.)
Give an example of a 2 phase mixture and describe how you would separate the substances
Rank the four gases (air, exhaled air, gas produced from from decomposition of H2O2, gas from decomposition of NaHCO3) in order of increasing concentration of oxygen).
What does w represent
Over 99% of the mass of an atom is located

Which traits are polygenic? Select three options.

Answers

Answer:

Hair color

Eye color

Birth weight

Explanation:

Answer:

is there an answier choice u have to choose from or no

Explanation:

An 8.5 g ice cube is placed into 255g of water. Calculate the temperature change of water when the ice melts

Answers

To answer this problem, we assume that upon the addition, the ice just melts without the temperature change and just uses the latent heat. The water only uses the sensible heat. Hence the equation is 8.5 g * (80cal/g)*4.1858 (J/g)= 255 g 8(4.18 J/gK)*(ΔT). 80cal/g is the latent heat of vaporization of ice. ΔT is equal to 2.67 Kelvin.

An original sample of the radioisotope fluorine-21 had a mass of 80.0 milligrams. Only 20.0 milligrams of this original sample remain unchanged after 8.32 seconds. What is the half-life of fluorine-21?(1) 1.04 s (3) 4.16 s
(2) 2.08 s (4) 8.32 s

Answers

Answer: The correct answer is Option 3.

Explanation:

All the radioisotope decay processes follow first order kinetics.

Rate law expression for first order kinetics is given by the equation:

$k=(2.303)/(t)\log(a)/(a-x)$

where,

k = rate constant = ?

t = time taken for decay process = 8.32 seconds

a = initial amount of the reactant = 80 mg

a - x = amount left after decay process = 20 mg

Putting values in above equation, we get:

$k=(2.303)/(8.32sec)\log(80g)/(20)\n\nk=0.166sec^(-1)$

The equation used to calculate half life for first order kinetics:

$t_(1/2)=(0.693)/(k)$

where,

$t_(1/2)$ = half life of the reaction = ?

k = $0.166sec^(-1)$

Putting values in above equation, we get:

$t_(1/2)=(0.693)/(0.166sec^(-1))=4.16sec$

Hence, the correct answer is Option 3.

Answer:

4.16s

Explanation:

N = 20*10⁻³g

N₀ = 80*10⁻³g

t = 8.32

N = N₀e⁻λt

In(N/N₀) = -λt

-λ = 1/t * In(N/N₀)

-λ = 1 / 8.32 * In (20*10⁻³ / 80*10⁻³)

-λ = 0.12 * In(0.25)

-λ = -0.167

λ = 0.167

t½ = 0.693 / λ

t½ = 0.693 / 0.167

t½ = 4.16s

In most of its compounds, this element exists as a monatomic cation.(A) F
(B) S
(C) N
(D) Ca
(E) Cl

Answers

The answer should be (D) Ca, because all others either occur as diatomic or are anions.

Which term describes a substance that increases the concentration of hydroxide ions in solution?Lewis definition of an acid
Arrhenius definition of a base
Bronsted-Lowry definition of a base
Bronsted-Lowry definition of an acid

Answers

Since the question pertains to hydroxide ions, or OH-, then we can be sure that the answer is a base. All we have to do is differentiate which of the definition is more appropriate. A Bronsted-Lowry base is defined as the substance that accepts a proton. An Arrhenius base is the substance that produces OH- during the acid-base reaction. Hence, the answer is Arrhenius definition base.

Answer

its B

Explanation:

The atoms of a solid aluminum can are close together, vibrating in a rigid structure. If the can is warmed up on a hot plate, what happens to the atoms?

Answers

Explanation:

Since atoms of solid aluminium can are closer to each other, therefore, when heat is supplied then transfer of energy in the form of heat will be faster.

As a result, when can is warmed up then atoms of solid aluminium can will start to vibrate more because heat will decrease the force of attraction between the molecules.

Thus, atoms will start to move away from each other and hence, they will vibrate more.

Answer:

the atoms will vibrate more.

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