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
lesya692 [45]
1 year ago
7

a 1.513 g sample of khp (c8h5o4k) is dissolved in 50.0 ml of di water. when the khp solution was titrated with naoh, 14.8 ml was

required to reach the phenolphthalien end point. calculate the molarity of the naoh solution? khp is a monoprotic acid.
Chemistry
1 answer:
JulijaS [17]1 year ago
4 0

molar mass of KHP ( C8H5O4K)= 8*12+5+4*16+39=204

( atomic weights : C=12, H=1, K=39 and O= 16)

moles of KHP= mass/molar mass =  1.513/204 =0.0074

The reaction between KHP and NaOH is

KHC8H4O4(aq) + NaOH(aq) => KNaC8H4O4(aq) + H2O(l)

1 mole of KHP requires 1 mole of NaOH;

moles of KHP=0.0074

moles of NaOH= 0.0074

concentration of NaOH= moles/ Volume in L, 1000ml= 1L, 14.8ml= 14.8/1000L=0.0148L

concentration of NaOH=0.0074/0.0148=0.5M

The molarity of NaOH is 0.5M

Molar Mass:

In chemistry, the molar mass of a compound is defined as the mass of a sample of that compound divided by the amount of substance. This is the number of moles of that sample measured in moles.

Molarity:

Molarity is used to describe the concentration of a solution. Molarity, also called molarity, is the number of moles of solute (dissolved substance) per liter of solution.

Learn more about molarity:

brainly.com/question/19943363

#SPJ4

You might be interested in
Consider the reaction below.
skelet666 [1.2K]

D increase in temperature and increase in pressure.

8 0
3 years ago
Read 2 more answers
if an element [x] contains 8 protons, 8 neutrons and 8 electrons, the atomic number of the element is ?
Kaylis [27]

Answer:

8

Explanation:

The atomic number refers to the number which identifies the element, which is the proton number.

7 0
3 years ago
Violet light has a wavelength of 422 nm, how much energy is found in this photon of violet light?
pashok25 [27]

Answer:

3.025eV

Explanation:

Energy of a photon is given by

E=hν

Where h is the Planck's constant

And ν represents the frequency of the photon .

Now for violet light wavelength λ=410nm= 410x10^-9m

By using the formula ν=c/λ

where c represents speed of light I.e 3 x 10^8 m/s

Calculating energy of violet photon we have

E=hc/λ

h=6.626 x 10^-34 J.s

On inserting the value in the formula , we get

E= 4.848 x 10^-19 Joules

To convert it into electron volts we need to divide it by 1.602 x10^-19.

The final result what we have is E=3.026eV.

Note: the result calculated is according to the above value . result may vary according to the values taken .

3 0
3 years ago
Among the intermolecular forces,which forces are typically the weakest
nekit [7.7K]

Answer:

The London dispersion force is the weakest intermolecular force. The London dispersion force is a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles.

8 0
2 years ago
This is very difficult
Oliga [24]

Answer: C

Explanation:

6 0
3 years ago
Other questions:
  • Whether or not the process is observed in nature, which of the following could account for the transformation of gallium-67 to z
    7·1 answer
  • What caused the bonding of two atoms which undergo an ionic bond?
    10·1 answer
  • Describe how physical and chemical change may have affected by temperature
    12·2 answers
  • What is the relationship between Celsius and kelvin
    12·1 answer
  • Atoms have a tendency to complete their outer energy level. This is known as _____.
    14·2 answers
  • How does understanding the structure of the atom help you see both unity and diversity in forms of matter?
    6·1 answer
  • How many grams of magnesium metal will react completely with 4.8 liters of 5.0 M HCl? Show all of the work needed to solve this
    7·1 answer
  • What's your favorite color ?!
    12·2 answers
  • Jimmy uses electrolysis to decompose a hydrochloric acid solution. The hydrochloric acid solution is called the... what?
    14·1 answer
  • Inner planets usually have...
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!