CHEMISTRY HIGH SCHOOL

Which of these compounds has chemical properties most similar to the chemical properties of ethanoic acid?(1) C3H7COOH (3) C2H5COOC2H5(2) C2H5OH (4) C2H5OC2H5

Answers

Answer 1
Answer:

The correct answer is : (1) C3H7COOH.

Ethanoic acid has the molecular formula CH3COOH. It belongs to the homologous series of alkanoic acid or carboxylic acid. Homologous series are series of organic compounds in which a member differs from the next member by –CH2. One of the major characteristics of the homologues is their similarity in chemical properties. Propanoic acid (C3H7COOH) is the only member of the alkanoic acid family among the options given. So, it is the only one that has similar chemical properties with ethanoic acid.The other options are wrong because:

(2) C2H5OH belongs to the alcohol family.

(3) C2H5COOC2H5 belongs to the alkanoates family (esters)

(4) C2H5OC2H5 belongs to the ether family.
Answer 2
Answer: You need to first consider the properties of ethanoic acid that are worth noting. Ethanoic acid is a weak acid (the carboxyl group has a resonance-stabilized base), and the length of its carbon chain (2 carbons) reflects the strength of its Van der Waals forces. Also, the hydroxyl group (as part of the carboxyl group) confers a large dipole moment to the compound. The most similar compound would be the one that resembles ethanoic acid in these respects.Thus, I would say that the answer is (2) C2H5OH. Because oxygen is highly electronegative, it can retain an extra electron without much difficulty, making the hydroxyl group slightly acidic. The hydroxyl group also confers a large dipole moment, and the 2 carbon backbone indicates similar Van der Waals interactions.

Related Questions

What is true when two reactants combine in an exothermic reaction?
How does the nucleus of a copper atom compared to the nucleus of a nickel atom
Which statement about the density of warm water is most likely correct?Warm water is more dense than cold water. Warm water is less dense than cold water. The density is the same for warm and cold water. The density will sometimes be higher for warm water and other times higher for cold water.
These statements describe three different reactions. 1 - An atom shares electrons with another atom. 2 - The nucleus of an atom is split apart. 3 - An atom gains an electron from another atom. Which reaction(s) most likely release the greatest amount of energy? 1 2 1 and 3 2 and 3
When a reaction occurs between atoms with ground state electron configuration 1s2 2s1 and 1s2 2s2 2p5 the predominant type of bond formed is

SELECT ALL THAT APPLYat STP conditions, 0.25 moles of CO2(g), H2(g), NH3(g)
1. Will contain the same number of molecules
2. Will contain the same number of atoms
3. Will occupy the same volume
4. Will have the same g.f.w

Answers

at STP conditions, 0.25 moles of CO2(g), H2(g), NH3(g)

The answers are:
1. Will contain the same number of molecules 
3. Will occupy the same volume

Answer: The correct answer is Option 1 and Option 3.

Explanation:

We are given:

0.25 moles of CO_2,H_2\text{ and }NH_3

STP conditions states that 1 mole of a gas occupies 22.4 L of volume.

The volume occupied by all the gases at STP will be 0.25* 22.4=5.6L

According to mole concept: 1 mole of a compound contains 6.022* 10^(23) number of molecules or 1 mole of an element contains 6.022* 10^(23) number of atoms.

We know that the given gases are compounds. Thus, all the three gases will have 0.25* 6.022* 10^(23)=1.5055* 10^(23) number of molecules.

Hence, the correct answer is Option 1 and Option 3.

Why can't we change the subscripts in balancing chemical equations?

Answers

Because the subscripts are what identify the compound. Changing the coefficient is okay, since you are only changing the number of whole compounds. If you change the subscript, however, you will change the compound into a completely different one. Hope that helps!!

An atom has 5 protons and 7 neutrons. What is its mass number?

Answers

mass number = protons + neutrons
mass number = 5 + 7
mass number = 12
Mass number = No. of protons + No. of neutrons

= 5 + 7

= 12 u.

Thus, the answer is 12 u.

Which material is the least likely to be recognized as a mixture by looking at it under a microscope

Answers

Answer:

Exa homogeneous mixtureplanation:

As you move down group one of the periodic table, what happens to the atomic radii?

Answers

Atomic radius increases down a group, as the distance between the nucleus and the valence electrons increases.

What is the volume of the sample at stp?

Answers

At stp the volume is 22.4 L .

hope this helps!
Other Questions
2. A magnifying glass is an example of a _______ lens.A. converging B. double-concave C. plano-convex D. plano-concave Student Answer: C Answer: Incorrect Reference: 3. If the distance from a converging lens to the object is less than the focal length of the lens, the image will be _______ the object. A. real, inverted, and smaller than B. virtual, upright, and larger than C. virtual, upright, and smaller than D. real, inverted, and larger than Student Answer: A Answer: Incorrect Reference: 4. Which of the following values represents an index of refraction of an actual material? A. .25 B. 0 C. .5 D. 1.25 Student Answer: C Answer: Incorrect Reference: 5. Which, if any, of these mirrors can produce a real image? A. Plane B. Convex spherical C. No mirrors can produce a real image. D. Concave spherical Student Answer: A Answer: Incorrect Reference: 6. When white light is incident on a prism, which one of the resulting color components will have the lowest index of refraction? A. Yellow B. Blue C. Green D. Orange Student Answer: C Answer: Incorrect Reference: 12. Which of the following is not a reason fluorescent lamps are advantageous over incandescent lamps? A. Fluorescent lamps operate at a higher temperature than incandescent lamps. B. Fluorescent lamps are more efficient than incandescent lamps. C. Fluorescent lamps dissipate more energy as light instead of heat than incandescent lamps. D. Fluorescent lamps produce light with less glare than incandescent lamps. Student Answer: B Answer: Incorrect Reference: 15. Which of the following is not a characteristic of electromagnetic waves? A. They can travel through a vacuum. B. They can be refracted. C. They can be reflected. D. They can travel at various speeds through any one material. Student Answer: B Answer: Incorrect Reference: 16. A ray at which angle would produce the most glare? A. 37 degrees B. 70 degrees C. 25 degrees D. 59 degrees Student Answer: B Answer: Incorrect Reference: 18. Which of the following statements is true of glare control? A. Using bulbs that aren't frosted will help to diffuse the light and reduce glare. B. Special care must be taken to prevent glare where a low illuminance is required. C. Redirecting lamp fixtures and adjusting bulb types will do little to control glare. D. Indirect lighting is preferred to direct lighting because it produces less glare. Student Answer: C Answer: Incorrect Reference: 19. Which of the following objects uses two converging lenses to produce two images, the second of which is virtual, magnified, and inverted? A. Slide projector B. Compound microscope C. Corrective eyeglasses D. Camera Student Answer: D Answer: Incorrect Reference: 20. The light intensity of a source is 100 candelas. The illuminance on a surface is 4 lux. How far is the surface from the source? A. 4 meters B. 6 meters C. 5 meters D. 7 meters Student Answer: B Answer: Incorrect
A gas that produces a "pop" with a burning splint is carbon dioxide. true or false
A 1.0 m h2s solution has a ph = 3.75 at equilibrium. what is the value of ka?
Which of the following will not have the same number of valence electrons?carbonsiliconleadbismuth