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
lidiya [134]
3 years ago
8

What is the PH of a 7.5x10^-3 M OH solution

Chemistry
2 answers:
Sav [38]3 years ago
7 0

Answer : The pH of a solution is, 11.88

Explanation:  Given,

Concentration of OH^- ion = 7.5\times 10^{-3}M

First we have to calculate the pOH.

Formula used :

pOH=-\log [OH^-]

pOH=-\log (7.5\times 10^{-3})

pOH=2.12

Now we have to calculate the pH.

Formula used :

pH+pOH=14\\\\pH=14-pOH\\\\pH=14-2.12=11.88

Therefore, the pH of a solution is, 11.88

Triss [41]3 years ago
5 0
pH: 11.8750612634
pOH: 2.12493873661
[H+]: 1.33333333333E-12
[OH-]: 0.0075
BASE
You might be interested in
How many atoms does theobromine have
Roman55 [17]
The theobromine molecule contains a total of 22 bonds
5 0
3 years ago
Part a use these data to calculate the heat of hydrogenation of buta-1,3-diene to butane. c4h6(g)+2h2(g)→c4h10(g)
Reptile [31]

<u>Answer:</u> The heat of hydrogenation of the reaction is coming out to be 234.2 kJ.

<u>Explanation:</u>

Enthalpy change is defined as the difference in enthalpies of all the product and the reactants each multiplied with their respective number of moles. It is represented as \Delta H

The equation used to calculate enthalpy change is of a reaction is:

\Delta H_{rxn}=\sum [n\times \Delta H_{(product)}]-\sum [n\times \Delta H_{(reactant)}]

For the given chemical reaction:

C_4H_6(g)+2H_2(g)\rightarrow C_4H_{10}(g)

The equation for the enthalpy change of the above reaction is:

\Delta H_{rxn}=[(1\times \Delta H_{(C_4H_{10})})]-[(1\times \Delta H_{(C_4H_6)})+(2\times \Delta H_{(H_2)})]

We are given:

\Delta H_{(C_4H_{10})}=-2877.6kJ/mol\\\Delta H_{(C_4H_6)}=-2540.2kJ/mol\\\Delta H_{(H_2)}=-285.8kJ/mol

Putting values in above equation, we get:

\Delta H_{rxn}=[(1\times (-2877.6))]-[(1\times (-2540.2))+(2\times (-285.8))]\\\\\Delta H_{rxn}=234.2J

Hence, the heat of hydrogenation of the reaction is coming out to be 234.2 kJ.

4 0
3 years ago
2. What types of organisms have cells with very large vacuoles?
Sedaia [141]
The answer would be plant cells
5 0
3 years ago
A 12.0% sucrose solution by mass has a density of 1.05 gem, what mass of sucrose is present in a 32.0-mL sample of this solution
natulia [17]

Answer:

Option C. 4.03 g

Explanation:

Firstly we analyse data.

12 % by mass, is a sort of concentration. It indicates that in 100 g of SOLUTION, we have 12 g of SOLUTE.

Density is the data that indicates grams of solution in volume of solution.

We need to determine, the volume of solution for the concentration

Density = mass / volume

1.05 g/mL = 100 g / volume

Volume =  100 g / 1.05 g/mL → 95.24 mL

Therefore our 12 g of solute are contained in 95.24 mL

Let's finish this by a rule of three.

95.24 mL contain 12 g of sucrose

Our sample of 32 mL may contain ( 32 . 12) / 95.24 = 4.03 g

7 0
3 years ago
trial 2, 2.68 g/cm/3 trial 3, 2.84g/cm/3. aluminum has a density of 2.70g/cm/3 calcute the percent error for each trial.
serg [7]

Answer:

trial 2: 0.74

trial 3: 5.19

I think but the equation for sloving percent error is:

(true value - determined value)/true value * 100

Explanation:

6 0
3 years ago
Other questions:
  • Which substance would have the highest melting point, based on electronegativity?
    15·1 answer
  • What is the term for the force exerted on an object by another object?
    5·1 answer
  • Resonance structures differ by ________. resonance structures differ by ________. number of atoms only number of electrons only
    7·1 answer
  • An atom contains 22 protons and 26 neutrons. What is its atomic number?
    7·1 answer
  • Can any kind soul help me please<br><br><br>RELATIVE FORMULA MASS​
    10·1 answer
  • Which property is common to noble gases?
    12·2 answers
  • I HAVE TIME LIMIT I NEED CORRECT ANSWERS!
    7·1 answer
  • What allows a mixture to be separated by distillation
    7·2 answers
  • All my questions are being "Deleted" for violating community guidelines by the same bots that scam you with the file. I swear- i
    14·1 answer
  • 6. A container is filled with a mixture of carbon dioxide, oxygen, and nitrogen gases. The total pressure inside
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!