1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MAXImum [283]
3 years ago
9

What is the best explanation for the fact that a solution of NaNO2(aq) is basic?NO2– is hydrolyzed with the formation of OH –(aq

) ions.Na+ is hydrolyzed with the formation of OH –(aq) ions.NaNO2(aq) decreases the Ka of HNO2(aq).NaNO2(aq) increases the Ka of HNO2(aq).
Chemistry
1 answer:
brilliants [131]3 years ago
7 0

Answer:

NO_{2}^- is hydrolyzed with the formation of OH^{-}_{(aq)} ions.

Explanation:

NaNO_2 is basic because it dissolves in water to form NO_{2}^- ion which further hydrolyzed in water to give OH^- ions.

The chemical reaction involving :

NaNO_{2}\rightarrow Na^++NO_{2}^-

NO_2^-+H_2O\rightleftharpoons HNO_2+OH^-

The hydroxide ions furnished in the above reaction is responsible for the NaNO_2 to be basic.

You might be interested in
Plz answer all 3, I will give 5 stars and brainiest!!! :)<br><br> THANKS
Cerrena [4.2K]

Answer:

B. Positive charge is caused by lack of electrons. A positive ion is formed by the loss of negatively charged electrons. Although the number of protons does not change in the ion, there is an excess number of protons over electrons which produces the positive charge. All electrons in the outer energy level are lost.

C. If there are more electrons than protons, then the element is a negative ion. The amount of neutrons does not play a factor into making a difference between an atom or an ion.

Explanation:

please give brainliest. :)

and have a great day!

5 0
3 years ago
Which of the following observations would indicate that a material is a pure substance
Lena [83]
What is the following
3 0
3 years ago
Read 2 more answers
Which solution is a homogeneous mixture?
astra-53 [7]

Answer:

soil

Explanation:

4 0
3 years ago
The activation energy of an uncatalyzed reaction is 70 kJ/mol. When a catalyst is added, the activation energy (at 20 °C) is 42
denis23 [38]

Answer:

T = 215.33 °C

Explanation:

The activation energy is given by the Arrhenius equation:

k = Ae^{\frac{-Ea}{RT}}

<u>Where:</u>

k: is the rate constant

A: is the frequency factor    

Ea: is the activation energy

R: is the gas constant = 8.314 J/(K*mol)

T: is the temperature

We have for the uncatalyzed reaction:

Ea₁ = 70 kJ/mol

And for the catalyzed reaction:

Ea₂ = 42 kJ/mol

T₂ = 20 °C = 293 K

The frequency factor A is constant and the initial concentrations are the same.

Since the rate of the uncatalyzed reaction (k₁) is equal to the rate of the catalyzed reaction (k₂), we have:

k_{1} = k_{2}

Ae^{\frac{-Ea_{1}}{RT_{1}}} = Ae^{\frac{-Ea_{2}}{RT_{2}}}   (1)

By solving equation (1) for T₁ we have:

T_{1} = \frac{T_{2}*Ea_{1}}{Ea_{2}} = \frac{293 K*70 kJ/mol}{42 kJ/mol} = 488. 33 K = 215.33 ^\circ C  

Therefore, we need to heat the solution at 215.33 °C so that the rate of the uncatalyzed reaction is equal to the rate of the catalyzed reaction.

I hope it helps you!      

4 0
3 years ago
A simple pendulum of length 1.00 m has a mass of 100 g attached. It is drawn back 30.0° and then released. What is the maximum s
Softa [21]

Answer:

4.16ms-1

Explanation:

Vmax=√2gl(1-cos30)

=√2x 10x 1(1-cos30)

=√20x (1-cos 30)

√17.3205

=4.16ms-1

4 0
3 years ago
Other questions:
  • The chemical and physical process that change things over time are called
    6·1 answer
  • A plane flew for 2 hours at 467 mph (mile per hour)and 5 hours at 536 mph. How far did the plane fly miles?
    9·1 answer
  • Gaseous methane CH4 reacts with gaseous oxygen gas O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O. If 12.4g of c
    7·1 answer
  • 5. Astronomers recently discovered a moon that does not<br> orbit a planet.
    13·1 answer
  • Which 3 things are always equal for an atom?
    7·1 answer
  • What is the difference between chemical change and physical change
    9·1 answer
  • 50 pts don't dare to answer wrong or just write irrelevant.
    5·1 answer
  • When the water in the ocean goes back into the sky what is it called?
    13·2 answers
  • Renewable resources are considered clean because they don't cause what
    9·1 answer
  • I don’t know what are the ones that are left ,can someone help me please
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!