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
poizon [28]
3 years ago
14

Like all equilibrium constants, Kw varies somewhat with temperature. Given that Kw is 3.31 × 10−13 at some temperature, compute

the pH of a neutral aqueous solution at that temperature.
Chemistry
1 answer:
Artyom0805 [142]3 years ago
5 0
Since Kw= [H⁺][OH⁻], and the concentration of both substances are the same, the equation is now Kw=[H⁺]²
So,
3.31x10⁻¹³ = [H⁺]²
Take the square root= 5.75x10⁻⁷
Then take the negative log to find the pH:
-log(5.75x10⁻⁷) = 6.25
You might be interested in
When solutions of silver nitrate and sodium chloride are mixed, a precipitation reaction occurs. What mass of precipitate can be
Bas_tet [7]

Explanation:

The given precipitation reaction will be as follows.

        AgNO_{3}(aq) + NaCl(aq) \rightarrow AgCl(s) + NaNO_{3}(aq)

Here, AgCl is the precipitate which is formed.

It is known that molarity is the number of moles present in a liter of solution.

Mathematically,       Molarity = \frac{\text{no. of moles}}{\text{volume in liter}}

It is given that volume is 1.14 L and molarity is 0.269 M. Therefore, calculate number of moles as follows.

                    Molarity = \frac{\text{no. of moles}}{\text{volume in liter}}

                     0.269 M = \frac{\text{no. of moles}}{1.14 L}

                    no. of moles = 0.306 mol

As molar mass of AgCl is 143.32 g/mol. Also, relation between number of moles and mass is as follows.

               No. of moles = \frac{mass}{\text{molar mass}}

                   0.307 mol = \frac{mass}{143.32 g/mol}

                           mass = 43.99 g

Thus, we can conclude that mass of precipitate produced is 43.99 g.

                 

8 0
3 years ago
H2, N2, O2 molecules. . . A)must be polar. must be nonpolar. . B)can be polar or nonpolar depending on geometric . C)configurati
LenKa [72]

Answer: The correct option is A.

Explanation: The given molecules are the molecules of same element.

These molecules are considered as diatomic species.

Polar molecules are the molecules in which some polarity is present in the bond. These molecules are formed when there is some difference in the electronegativities of the elements. Example: HCl

Non-polar molecules are the molecules where no polarity is present in the bond. These molecules are formed when there is no difference in the electronegativities of the elements. Example: H_2, O_2

The given molecules are non-polar in nature.

Hence, these molecules must be non-polar. So, the correct option is A.

6 0
3 years ago
Read 2 more answers
Explain the bonding that occurs between sodium and chlorine. Specifically, what kind of bonding takes
Alex787 [66]

Answer:

About bonding

Explanation:

A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bond.

7 0
3 years ago
What happens when you cook an egg in a chemical change?
SVETLANKA909090 [29]
<span> </span>the egg white or albumen becomes denatured plus you can't reverse the cooking of an egg. hope that helps
3 0
4 years ago
Help me please guys #9
Leni [432]

Answer:

Bases

Explanation:

Most soaps fall under the base category as they are slippery and will taste bitter if you taste it (DONT TRY IT THO).

7 0
3 years ago
Other questions:
  • A 25.0 mL sample of H3PO4 requires 50.0 mL of 1.50 M NaOH for complete neutralization. What is the molarity of the acid?
    13·1 answer
  • 4. Which has the longer wavelength: light with a frequency of 7.32 X 1014 Hz or light with a frequency of 6.0
    5·1 answer
  • Two atoms of the same substance wi the different numbers of neutrons are called what
    14·1 answer
  • Which set of three quantum numbers (n, l, ml) corresponds to a 2p orbital?
    5·1 answer
  • The metric system is also known as the _____.
    5·2 answers
  • At a certain temperature, Kp for the reaction, Cl2(g) + Br2(g) &lt;=&gt; 2 BrCl(g) is 0.00029. Calculate the value of Kp for the
    7·1 answer
  • This gas law works only if temperature is recorded in ———— units
    12·1 answer
  • 1. Why is the box sitting on the table not moving?
    12·1 answer
  • How does the entropy change in the reaction 2C3H6(g) + 902(g) → 6CO2(g) +
    13·1 answer
  • Calcium (Ca) and diatomic oxygen (O2) combine to form calcium oxide (CaO). The data table below compares the properties of these
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!