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
garik1379 [7]
2 years ago
8

A solution of pH 5 is diluted 100 times. Find the pH of the resulting solution.

Chemistry
2 answers:
liq [111]2 years ago
3 0
First, we calculate of the concentration of the H+ ions in the solution from the pH given. Then, calculate the new concentration after dilution. Calculation are as follows:

pH = -log[H+]
5 = -log[H+]
[H+] = 1 x 10^-5 M

M1V1 = M2V2
<span>1 x 10^-5 M (V1) = M2(100V1)
</span>M2 = 1 x 10^-7

pH =  -log[<span>1 x 10^-7</span>]
pH = 7

Paraphin [41]2 years ago
3 0

Answer:

The pH of the resulting solution is 7. This means that the solution is neutral.

Explanation:

To reach the pH of the resulting solution some calculations are required. They are simple calculations and you can use a calculator to help. Well, first you have to find out the concentration of hydrogen atoms that the solution had before it was diluted, for that you will use the formula pH = -log [H +]. Substituting the values in the formula, we have:

pH = -log [H +]

5= 5 = -log [H +]

[H +] = 1 x 10 ^ -5 M

Once you find this value, you will find the H + atom concentration after dilution using the formula C1V1 = C2V2. Substituting the values in the formula we will have:

C1V1 = C2V2

1 x 10 ^ -5 M (V1) = M2 (100V1)

M2 = 1x10 ^ -7

You can now reuse the first formula to finally find the pH of this solution after all dilution. The calculation will be:

pH = -log [1 x 10 ^ -7]

pH = 7

You might be interested in
If a star is 300 light years away from Earth, how long does it take light from that star to reach Earth?
Salsk061 [2.6K]

Answer: It would take 300 light years to reach Earth.

Explanation:

8 0
2 years ago
A gas absorbs 10J of heat and is simulataneously comptessed by a constant external pressure of 0.5atm from 4L to2L in volume.Wha
Ne4ueva [31]

Answer:

B. 111 J

Explanation:

The change in internal energy is the sum of the heat absorbed and the work done on the system:

ΔU = Q + W

At constant pressure, work is:

W = P ΔV

Given:

P = 0.5 atm = 50662.5 Pa

ΔV = 4 L − 2L = 2 L = 0.002 m³

Plugging in:

W = (50662.5 Pa) (0.002 m³)

W = 101.325 J

Therefore:

ΔU = 10 J + 101.325 J

ΔU = 111.325 J

Rounded to three significant figures, the change in internal energy is 111 J.

7 0
2 years ago
what would you be most likely to measure by immsering and object in water and seeing how much the water level rises
Katena32 [7]
Mass, if you know what element you are working with.
4 0
3 years ago
Physical and chemical change
Greeley [361]
physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed. For example, if a piece of paper is cut up into small pieces it still is paper.
5 0
3 years ago
Read 2 more answers
A helium-filled weather balloon has a volume of 512 L at 18.9°C and 756 mmHg. It is released and rises to an altitude of 2.14 km
vazorg [7]

633.97 L

Explanation:

Well use the combined gas law;

P₁V₁T₁ = P₂V₂T₂

We need to change the temperatures into Kelvin;

18.9°C= 292.05 K

5.9°C = 279.05 K

756 * 512 * 292.05 = 639 * V₂ * 279.05

113,044,377.6 = 178,312.95 V₂

V₂ = 113,044,377.6 / 178,312.95

V₂ = 633.97 L

3 0
2 years ago
Read 2 more answers
Other questions:
  • Name four products of incomplete combustion<br><br> One :<br> Two :<br> Three :<br> Four :
    5·1 answer
  • Explain the impact that changing pressure has on a system in a state of dynamic equilibrium. What will happen when pressure on a
    9·1 answer
  • Maple syrup, which comes from the sap of maple trees, contains water and natural sugars. It's a clear, brown liquid and the suga
    15·1 answer
  • What volume of oxygen at 423.0 K and a pressure of 127.4 kPa is produced by the decomposition of 129.7 g of BaO2 to BaO and O2?
    14·1 answer
  • Electronegativities of the elements Na, Al, P, and Cl follow a specific trend across the period. Based on this trend, an electro
    12·2 answers
  • The partial pressure of cartbon dioxide in the atmgsphere is 0239 toer Caiculate the partial pressure in mm He and atm Rpund eac
    7·1 answer
  • How many molecules of water of water are in a 821.3 g sample
    6·1 answer
  • See Picture for Question. I have other questions as well.
    14·1 answer
  • Help pls thnk you!!!!
    15·1 answer
  • Which of the following is an oxidation-reduction reaction?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!