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
Ad libitum [116K]
2 years ago
14

Which comparison is correct?

Physics
1 answer:
AleksandrR [38]2 years ago
4 0

Considering their pKa, we can affirm that PH₃ is a stronger acid than NH₃.

We want to compare the strength of different acids. To do so, we need to compare their pKa.

<h3>What is the pKa?</h3>

The pKa is the negative base 10 logarithm of the acid dissociation constant, Ka.

The lower the pKa, the stronger the acid.

Which comparison is correct?

  • HF is a stronger acid than HCI. FALSE. The pKa of HF is 3.1. and the pKa of HCl is 6.0.
  • H₂S is a stronger acid than HCI. FALSE. The pKa₁ of H₂S is 7.04. and the pKa of HCl is 6.0.
  • PH₃ is a stronger acid than NH₃. TRUE. The pKa of PH₃ is -5.5  and the pKa of NH₃ is 9.9.
  • NH₃ is a stronger acid than HF. FALSE. The pKa of NH₃ is 9.9 and the pKa of HF is 3.1.

Considering their pKa, we can affirm that PH₃ is a stronger acid than NH₃.

Learn more about pKa here: brainly.com/question/13608171

You might be interested in
In economics what goods and services will be produced?​
poizon [28]

Answer:A market economy is a system where the laws of supply and those of demand direct the production of goods and services. 1  Supply includes natural resources, capital, and labor. Demand includes purchases by consumers, businesses, and the government. Businesses sell their wares at the highest price consumers will pay.

Explanation:

5 0
3 years ago
Based on the data table,which car won the race?
kobusy [5.1K]

Answer:

car one

Explanation:

3 0
2 years ago
A group of scientists have obtained some experimental results.
topjm [15]
<span>In order best to find out whether the obtained experimental results are worth mor etime and resources the group of scientists should present their results (could be done also in poster session) to other scientists in order to hear their opinion and get a feedback. The shoudl also ask another researchers to redo the experiments and to compare the results. </span>
4 0
3 years ago
Read 2 more answers
Two ball bearings of mass m each moving in opposite directins with equal speed v collide head on with each other.predict the out
posledela

Yo sup??

since the collision is elastic therefore we can say that the two balls will then move in opposite direction.

If ball 1 was moving from east to west then after collision it will move from west to east

and if ball 2 was moving from west to east then it will start moving from east to west.

Hope this helps.

7 0
3 years ago
A car travels from Boston to Hartford in 4 hours. The two cities are 240 kilometers apart. What was the average speed of the car
Y_Kistochka [10]

Answer:

Average speed is 60 km/hour

Explanation:

When we need to calculate average speed, we use this equation:

V = \frac{x_{f} - x_{o}}{t_{f} - t_{o}}

Where:   x_{o} = 0 km   position at the beginning

              x_{f} = 240 km   at the end

              t_{o} = 0 hours

              t_{f} = 4 hours

Then:     V = \frac{240 km - 0 km}{4 hours - 0 hours}

              V = \frac{240 km}{4 hours}

Finally    V = 60 km/hour

6 0
3 years ago
Other questions:
  • Can the validity of a model be limited, or must it be universally valid? How does this compare to the required validity of a the
    11·1 answer
  • In a 100 mm diameter horizontal pipe, a venturimeter of 0.5 contraction ratio has been fitted. The head of water on the meter wh
    12·1 answer
  • Variations in the resistivity of blood can give valuable clues about changes in various properties of the blood. Suppose a medic
    13·1 answer
  • Consider the following system, where F = 80 N, m = 1 kg, and M = 11 kg M m F What is the magnitude of the force with which one b
    5·1 answer
  • A rock falls off a cliff. How fast is the rock traveling vertically two seconds later?
    5·1 answer
  • Each of 100 identical blocks siting on a frictionless surface is connected to the next bloc by a massless string. The first bloc
    10·1 answer
  • What is the average speed of an alien space ship that traveled 10,000 km in 600 hours?
    9·1 answer
  • 1. 20.0 mL of a liquid has a mass of 58.2 g. What is the density of the liquid?
    13·2 answers
  • Write down local units of mass?​
    6·1 answer
  • Consider a force of 57.3 N, pulling 3 blocks of
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!