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
Natasha_Volkova [10]
4 years ago
13

Calculate the hydroxyl ion concentrationin 0.02M solution of H2SO4​

Chemistry
1 answer:
sergij07 [2.7K]4 years ago
7 0
In a given solution, the concentration of hydrogen ions and hydroxide ions are related to each other by the following expression:

pH + pOH = 14

where, pH = - log[H+] and pOH = - log [OH-]

In this case, the concentration of sulfuric acid is given as 2.1 x 10^-4 M. Since each molecule of sulfuric acid (H2SO4) contains 2 atoms of hydrogen, the concentration of hydrogen ions in this solution is twice that of sulfuric acid. That is,

Concentration of H+ ions = 2 x 2.1 x 10^-4

= 4.2 x 10^-4 M

This means, pH = -log (4.2 x 10^-4) = 3.38

Since pH + pOH = 14

pOH = 14 - 3.38 = 10.62

This means, 10.62 = -log [OH-]

Solving the equation, we get [OH-] = 2.4 x 10^-11 M.

Hope this helps.
You might be interested in
a 9.84 ounces ingot of unknown metal is heated from 73.2 degrees fahrenheit - 191.2 degrees fahrenheit this requires 3.912 calor
Gekata [30.6K]

The SI unit of specific heat is J per gram per degree Celsius. Thus it follows that specific heat could be calculated in this way:

Specific Heat = Energy / (mass x change in temperature)

Thus,

Specific Heat = 3.912 cal / (9.84 oz x (191.2 ˚F – 73.2 ˚F))

Specific Heat = 3.369 x 10^-3 cal/oz-˚F

6 0
4 years ago
How many calories of heat are required to raise the temperature of 1.00kg of water from 10.2 degrees Celsius to 26.8 degrees Cel
Vika [28.1K]

Answer:

Explanation:

we know that specific heat is the amount of heat required to raise the  temperature of substance by one degree mathmeticaly

Q=mcΔT

ΔT=T2-T1

ΔT=26.8-10.2=16.6

C for water is 4.184

therefore

Q=1.00*4.184*16.6

Q=69.4 j

now we have to covert joule into calorie

1 calorie =4.2 j

x calorie=69.4 j/2

so 69.4 j =34.7 calorie thats why 34.7 calorie heat is required to raise the temperature of water from 10.2 to 26.8 degree celsius

6 0
3 years ago
The mass of each WtWt isotope is measured relative to C−12C−12 and tabulated below. Use the mass of C−12C−12 to convert each of
Nadya [2.5K]

The question is incomplete , the complete question is;

The mass of each Wt isotope is measured relative to C-12 and tabulated below. Use the mass of C-12 to convert each of the masses to amu and calculate the atomic mass of Wt.

Wt-296  =  24.6622

Answer:

The atomic mass of Wt-296 is 195.9464 amu.

Explanation:

1 amu is defined as 1 by twelfth of the carbon-12 mass.

Mass of an isotope Wt-296 = 24.6622

Mass of an isotope Wt-296 in amu = M

M\times \frac{1}{12 amu}=24.6622

M=24.6622\times 12 amu=295.9464 amu

The atomic mass of Wt-296 is 195.9464 amu.

8 0
3 years ago
Use the Ideal Gas Law equation to find the molar mass of a 98.2 g sample of gas that fills a 50.0-liter container at STP.
Vlad [161]

Answer:

DD

Explanation:

DD

8 0
3 years ago
Calculate the density of a solid that has a volume of 2cm3 and a mass of 3g
katrin2010 [14]

Answer:

The density is 6

Explanation:

p = m × v

p = 3 × 2

p = 6

Hope this helped! :)

8 0
3 years ago
Other questions:
  • If you wanted to change the polarity of hydrogen bromide (HBr) by substituting
    13·1 answer
  • Give an example of how a functional group can affect the properties of an organic compound.
    11·1 answer
  • List the following aqueous solutions in order of decreasing freezing point: 0.040 m glycerin (C3H8O3), 0.020 m potassium bromide
    11·1 answer
  • What is the best reason for the difference in properties of LiCl and C6H14O?
    6·2 answers
  • What do we assume about the volume of the actual molecules themselves in a sample of gas, compared to the bulk volume of the gas
    9·1 answer
  • Draw the correct structure for 4-methyl-2-heptanone or 4-methylheptan-2-one.
    15·2 answers
  • 14. Have your thoughts about the Great Pacific Garbage Patch changed since we first talked about it earlier in the year? Do you
    5·1 answer
  • Many of the lunar craters are due to volcanic eruptions true or false
    9·1 answer
  • _____________ is a compound that is added in small amount (a
    15·1 answer
  • Describe the changes that earths atmosphere has gone to overtime
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!