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
alexira [117]
2 years ago
5

At 25 °C, what is the hydroxide ion concentration, [ OH â ] , in an aqueous solution with a hydrogen ion concentration of [ H +

] = 5.0 Ã 10 ^â 4 M?
Chemistry
1 answer:
umka2103 [35]2 years ago
7 0

Answer:

[OH⁻] = 2.0 × 10⁻¹¹ M

Explanation:

Given data

  • Temperature: 25°C
  • Concentration of hydrogen ion ([H⁺]): 5.0 × 10⁻⁴ M
  • Concentration of hydroxide ion ([OH⁻]): ?

We can calculate the concentration of hydroxide ion using the following expression.

[H⁺].[OH⁻] = Kw

where,

Kw is the ionic product of water (Kw = 1.0 × 10⁻¹⁴ at 25°C)

[H⁺].[OH⁻] = Kw

[OH⁻] = Kw/[H⁺]

[OH⁻] = 1.0 × 10⁻¹⁴/5.0 × 10⁻⁴

[OH⁻] = 2.0 × 10⁻¹¹ M

You might be interested in
When an aluminum cube of edge 0.100 m and temperature T0= 5.00°C is submerged in a bucket of water, the level of the water rises
vodka [1.7K]

Answer:

5.52cm³ of water will rise and might spill over the edge

Explanation:

Use the change in volume of a liquid with changing temperature equation which is written as

ΔV = β x V₀ x ΔT, where β is the coefficient of expansion, V₀ is the volume being submerged and ΔT is the difference in temperature

ΔV = (69 x 10⁻⁶) x (0.1 x 0.1 x 0.1) x (85 - 5)

ΔV = 5.52 x 10⁻⁶ m³

ΔV = 5.52cm³

7 0
3 years ago
18. Describe the relationship between kinetic energy and mass, and give an example of
lidiya [134]

Answer:

Kinetic energy is directly proportional to mass

Explanation:

Kinetic energy is directly proportional to the mass of an object and also directly proportional to the square of the velocity of that object:

E_k = \frac{1}{2} mv^2

Notice that if we keep velocity constant and only increase the mass of a object, the kinetic energy of that object would increase, as we've already emphasized the direct relationship between the kinetic energy term and the mass term.

Let's take a simple example: assume that object 1 and object 2 are both moving at the same velocity but object 1 has a much lower mass than object 2. According to the equation, object 1 has lower kinetic energy. This object can then transform all of its kinetic energy into some other form, say, heat the ground. The heat transferred will be significantly lower than by the object 2 moving at the same velocity but having a much greater mass.

5 0
3 years ago
Convert 125 kPa to atm<br><br>A. 12,700 atm<br><br>B. 0.164 atm<br><br>C. 1.23 atm​
JulijaS [17]

Answer:

c sounds like the most reasonable answer rember to always divide the pressure value by 101

6 0
3 years ago
What is the lowest atom on the periodic table
grin007 [14]

Answer:Hydrogen

Explanation:

It simply is the lowest in weight which is atoms.

4 0
3 years ago
Read 2 more answers
Oxides of nitrogen result from a combination of nitrogen and A. hydrogen. B. carbon. C. oxygen. D. argon.
lukranit [14]

Answer:

Oxygen because that's what oxides are/what oxide means.

6 0
3 years ago
Read 2 more answers
Other questions:
  • How much heat (in kj) is released when 3.600 mol naoh(s) is dissolved in water? (the molar heat of solution of naoh is â445.1 kj
    9·2 answers
  • What information is shown in an atom’s electron dot diagram? the number of shells an atom has the number of electrons in each sh
    11·2 answers
  • How many moles of aluminum are needed to react completely with 1.2 mol of feo
    10·1 answer
  • What is the mass of 4 moles of helium, He?
    12·1 answer
  • 9. Which is a product of photosynthesis?
    14·1 answer
  • What is the definition of pendulum
    8·2 answers
  • What phase will you see one week after
    13·1 answer
  • About how long does it take for the reaction to reach equilibrium in this concentration versus time graph?
    13·1 answer
  • WILL GIVE 50 POINTS AND BRAINLIEST Describe the properties of alkaline earth metals. Based on their electronic arrangement, expl
    15·1 answer
  • A certain gas is found in the exhaust of automobiles and power plants. Consider a 1.53 L sample of a gas at a pressure of 5.6 x
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!