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
Anni [7]
3 years ago
11

Which of the following species cannot act as a Lewis base?

Chemistry
1 answer:
gayaneshka [121]3 years ago
6 0

Answer:

NH4+

Explanation:

A Lewis base is a substance with the ability to share or give pairs of electrons.

The NH4 + ammonium ion donates a proton, therefore the ammonium ion is a Lewis acid.

You might be interested in
Be sure to answer all parts. What is the [H3O+] and the pH of a buffer that consists of 0.26 M HNO2 and 0.89 M KNO2? (K, of HNO2
Aleksandr-060686 [28]

Answer : The H_3O^+ ion concentration is, 1.12\times 10^{-3}M and the pH of a buffer is, 2.95

Explanation : Given,

K_a=7.1\times 10^{-4}

Concentration of HNO_2 (weak acid)= 0.26 M

Concentration of KNO_2 (conjugate base or salt)= 0.89 M

First we have to calculate the value of pK_a.

The expression used for the calculation of pK_a is,

pK_a=-\log (K_a)

Now put the value of K_a in this expression, we get:

pK_a=-\log (7.1\times 10^{-4})

pK_a=4-\log (7.1)

pK_a=3.15

Now we have to calculate the pH of the solution.

Using Henderson Hesselbach equation :

pH=pK_a+\log \frac{[Salt]}{[Acid]}

pH=pK_a+\log \frac{[KNO_2]}{[HNO_2]}

Now put all the given values in this expression, we get:

pH=3.15+\log (\frac{0.89}{0.26})

pH=2.95

The pH of a buffer is, 2.95

Now we have to calculate the H_3O^+ ion concentration.

pH=-\log [H_3O^+]

2.95=-\log [H_3O^+]

[H_3O^+]=1.12\times 10^{-3}M

The H_3O^+ ion concentration is, 1.12\times 10^{-3}M

4 0
2 years ago
Can you use volume to measure out a mole of a gas? Why or why not?
Rashid [163]

The volume of a gas is defined by the volume of its container.  

However, given the number of moles, and standard temperature and pressure, you can use the Ideal Gas Law to calculate the volume.

8 0
3 years ago
What would happen if carbon -14 gained 1 proton and lost 1 neutron?
sleet_krkn [62]
D. To answer this question refer to the periodic table and think logically about it. Adding one proton increases the atomic number so you go along the row to Nitrogen. If you lose one neutron then the atomic mass decreases by 1 so 14-1 is 13.
4 0
3 years ago
Write a molecular equation for the gas-evolution reaction that occurs when you mix aqueous hydroiodic acid and aqueous sodium su
Leona [35]
First, we construct the reaction equation:

Na₂SO₃ + 2HCl → 2NaCl + SO₂ + H₂O

H₂SO₃ is formed as an intermediate but decomposes to water and SO₂ gas.
6 0
3 years ago
If two forces are heading in the same direction, we ______ them to calculate net force.
steposvetlana [31]

Answer:

add

Explanation:

5 0
2 years ago
Other questions:
  • Which of these features was formed by hotspot volcanism?
    10·2 answers
  • how would physical changes to Earth such as an iceberg or rising sea levels lead to physical changes in organisms?
    11·1 answer
  • Will platinum (pt) metal react with a lead(ii) nitrate solution?
    15·1 answer
  • For the following questions, use a periodic table and your atomic calculations to find the unknown information about each isotop
    7·1 answer
  • This formula shows the chemical reaction that occurs when the body breaks down sugar. The products are carbon dioxide and water.
    5·1 answer
  • The mass of an object will be the same on the Earth as it is on the Moon.<br><br><br> NEED HELP ASAP
    9·1 answer
  • What is the ph of a solution of 0.450 m kh2po4, potassium dihydrogen phosphate?
    10·1 answer
  • The first season of Stranger Things consists of eight episodes. Each episode is approximately
    10·1 answer
  • How many moles are in 11.5 L of a gas at STP?
    6·1 answer
  • The reaction 2Mg(s) + O2(g) --&gt; 2MgO(s) is a
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!