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
bazaltina [42]
3 years ago
15

A student titrates a 20.00 mL sample of an aqueous borax solution with 1.03 M H2SO4. If 2.07 mL of acid are needed to reach the

equivalence point, then what is the molarity of the borax solution
Chemistry
1 answer:
RSB [31]3 years ago
6 0

Answer:

The concentration of the borax solution is 0.1066 M

Explanation:

Step 1: Dtaa given

Volume of a sample of aqueous borax solution = 20.00 mL = 0.020 L

Molarity of H2SO4  = 1.03 M

Volume of the H2SO4 = 2.07 mL = 0.00207 L

Step 2: The balanced equation

Na2B4O7*10H2O(borax) + H2SO4 ⇆ Na2SO4 + 4 H3BO3 + 5 H2O

Step 3: Calculate molarity of borax solution

b*Ca*Va = a * Cb*Vb

⇒with B = the coefficient of H2SO4 = 1

⇒with Ca = the concentration of borax = TO BE DETERMINED

⇒with Va = the volume of borax = 0.020 L

⇒with a = the coefficient of borax = 1

⇒with Cb = the concentration of H2SO4 = 1.03 M

⇒with Vb = the volume of H2SO4 = 0.00207 L

Ca*0.020 L = 1.03 M * 0.00207 L

Ca = (1.03 * 0.00207) / 0.020

Ca = 0.1066 M

The concentration of the borax solution is 0.1066 M

You might be interested in
what is the substance called,that reaches Earthes surface and is made up of molten rock ,gasses and minerals
torisob [31]
\ i believe the word that you are looking for is lava
4 0
3 years ago
Read 2 more answers
What element is Column 1, period 3
Finger [1]

Answer:

Sodium (Na)

Explanation:

The element on the periodic table at Column (group) 1, period 3 is Sodium (Na)

3 0
2 years ago
Help Please! Thanks!
soldier1979 [14.2K]

Answer:

a

Explanation:

it would be the most reasonable

4 0
2 years ago
Read 2 more answers
PLEASE HELP ME IM TAKING A BIG TEST
romanna [79]

Answer:

400 miles because it is going 50 mph

8 0
2 years ago
Read 2 more answers
If 100% is not passed from one trophic level to the next, where does this energy go?
Sonja [21]
D is the answer to question

6 0
2 years ago
Read 2 more answers
Other questions:
  • What does a graph with no trend indicate about the variables?
    5·1 answer
  • Which of these is always equal to the molar mass of any element?
    12·2 answers
  • Which substance is amphiprotic?
    11·1 answer
  • At constant pressure, which of these systems do work on the surroundings? Check all that apply.
    13·1 answer
  • A coffee cup calorimeter was used to measure the heat of solution, the change in enthalpy that occurs when a solid dissolves in
    7·1 answer
  • ANALISIS DE LA OBRA UN VIAJE AL CENTRO DE LA TIERRA
    12·1 answer
  • Why did scientists in the 1800s decide that the list of known elements needed to be more
    5·1 answer
  • PLZ HELP! I WILL GIVE BRAINLIEST!
    8·1 answer
  • What type of element would form an ionic bond with iodine?
    6·1 answer
  • The molar mass of water (H2O) is 18. 0 g/mol. A sample of water has a mass of 18. 0 g. How many moles of water are contained in
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!