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Ket [755]
3 years ago
12

A water solution of sodium acetate is basic because...a. the conjugate base of the acetate ion is a strong base. b. sodium aceta

te is only weakly ionized. c. the acetate ion acts as a Bronsted-Lowry base in a reaction with water. d. A water solution of sodium acetate is acidic.
Chemistry
1 answer:
Novay_Z [31]3 years ago
5 0

Answer:

The correct answer is c. the acetate ion acts as a Bronsted-Lowry base in a reaction with water.

Explanation:

Sodium acetate (NaCH₃COO) dissociates in water to give Na⁺ and CH₃COO⁻ ions as follows:

NaCH₃COO(s) → Na⁺(aq) + CH₃COO⁻(aq)

The acetate ion (CH₃COO⁻) is the conjugated base of acetic acid (CH₃COOH). Acetic acid is a weak acid, so the acetate ion will try to regenerate the weak acid. For this, it will acept a proton (acting as a Bronsted-Lowry base) from water to form acetic acid. As result, OH⁻ is released and the solution turns basic:

CH₃COO⁻(aq) + H₂O(l) ⇄ CH₃COOH(aq) + OH⁻(aq)

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Serggg [28]

The energy of a nuclear reactor gets converted to electricity by using steam. As steam converts mechanical energy to electricity.

Answer: Option C

<u>Explanation: </u>

Nuclear reaction works on the principle of nuclear fission. The main functioning of nuclear reactor is the generation of neutrons by fission of Uranium oxide.

The rate of generation of neutrons need to be controlled in the reaction to have a controlled chain reaction which is suitable for generating electricity.

So, the controlling of rate of nuclear generation is done by moderators. The moderators are generally water or graphite in any nuclear reactor. So during these process, steam is produced in the reactor core which then flows through a turbine engine.

The steam rotates the turbines in the generator and thus the mechanical energy of the turbine during rotation is converted as the electrical energy in the generator.

5 0
3 years ago
How many molecules of ethane ( C2H6) are present in 0.197g of C2H6?
Brut [27]

Answer:

3.945 x 10²¹ molecules

Explanation:

  • Firstly, we need to calculate the no. of moles using the relation:
  • n = mass/molar mass = (0.197 g)/(30.07 g/mol) = 6.55 x 10⁻³ mol.
  • It is known that every 1.0 mol of a molecule contains Avogadro's number of molecules (NA = 6.022 x 10²³).
  • <em>∴ 0.197 g of C₂H₆ will contain</em> = (6.55 x 10⁻³ mol)(6.022 x 10²³) = <em>3.945 x 10²¹ molecules.</em>
4 0
3 years ago
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viva [34]

Answer:

i had this on study island the answer is "move a short distance away from the door until they collide with other air particles."

Explanation:

hope this helped :)

7 0
3 years ago
Which of the following is not a possible sublevel?<br><br> 1p<br> 2s<br> 3d<br> 4f
Sindrei [870]
1p is not possible because it goes like this 1s2 2s2 2p6
3 0
4 years ago
Read 2 more answers
Ionic or covalent C2H5OH
Afina-wow [57]

Answer:

Covalent  

Explanation:

A molecule of C₂H₅OH has C-C, C-H, C-O, and O-H bonds.

A bond between A and B will be ionic if the difference between their electronegativities (ΔEN) is greater than 1.6.

\begin{array}{ccc}\textbf{Bond} & \textbf{$\Delta$EN} & \textbf{Polarity}\\\text{C-C} & 2.55 - 2.55 = 0.00 & \text{Nonpolar covalent}\\\text{C-H} & 2.55 - 2.20 = 0.35 & \text{Nonpolar covalent}\\\text{C-O} & 3.44 - 2.55 = 0.89 & \text{Polar covalent}\\\text{O-H} & 3.44 - 2.20 = 1.24 & \text{Polar covalent}\\\end{array}

No bond has a large enough ΔEN to be ionic.

C₂H₅OH is a covalent molecule.

6 0
3 years ago
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