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
Rama09 [41]
3 years ago
6

3.0 M HI Unknown NaOH initial burette reading 0.2 ml 0.7 ml final burette reading 47.6 ml 37.5 ml What is the concentration of t

he base (NaOH) in the following titration?
Chemistry
1 answer:
stich3 [128]3 years ago
6 0

This is a neutralization, which means we are mixing a base with an acid until the mixture becomes neutral. We add more HI to the NaOH until the number of acid equivalents is equal to the number of base equivalents. We can calculate the acid equivalents using normality and volume, and the same with base equivalents.

A = acid equivalents = normality*volume (in the acid solution)

B = base equivalents = normality*volumen (in the base solution)

A = B

NA*VA = NB*VB

HI is an acid which releases only 1 acid equivalent per molecule, so its molarity is equal to its normality.

NaOH is a base which releases only 1 base equivalent per formula unit, so its molarity is equal to its normality.

MA*VA = MB*VB

We’re trying to find out NaOH molarity, which is equal to the NaOH normality.

MB = MA*VA/VB

DATA:

MA = 3.0 M

<span>The volumen of HI used can be calculated by subtracting the final volume of the burette to its initial volume (the final volume is smaller, as we have taken some volume away)</span>

VA = V0-Vf = 0.7 ml - 0.2 ml = 0.5 ml

VB = V0-Vf = 47.6 ml - 37.5 ml = 10.1 ml

MB = 3.0M*0.5M/10.1M = 0.149 M

You might be interested in
Ultrasound is used to break up kidney stones. How do sound waves break up kidney stones?
dolphi86 [110]

Answer:

eswl uses shock waves to break kidney stones into small pieces that can more easily travel through the urinary tract.

Explanation:

hope this helps

4 0
3 years ago
A reproducible measurement is an accurate one. A. True B. False
4vir4ik [10]
The answer is
B. False
5 0
3 years ago
Read 2 more answers
What best defines an extensive property of a substance? (4 points) A property that is observable A property that is measurable A
kolbaska11 [484]

Answer:

A physical property that depends on the sample size 

Explanation:

6 0
2 years ago
Someone please help me I got a few minutes
HACTEHA [7]

Answer:

30 feet /second

Explanation:

60 feet/ 2 sec = 30 feet/sec

6 0
3 years ago
Read 2 more answers
How do you do this?
Alona [7]
It would be Atom 2 because the proton and neutron are both nine and the election is 8 which is -1 to nine <span />
7 0
2 years ago
Other questions:
  • Location A and B are adjacent. Location A is at a higher temperature than Location B. What will most likely happen?
    6·2 answers
  • In a chemical reaction, the atoms or starting molecules, are different from the products or ending molecules. atoms are neither
    5·1 answer
  • The reaction of sulfur with oxygen is shown below. 2s(s) + 3o2(g) → 2so3(g) calculate the mass of sulfur trioxide (in g) produce
    9·2 answers
  • Determine the molecular geometry about the left carbon atom in ch3co2ch3.
    6·2 answers
  • Key terms: Reset ____________ anions are strong nucleophiles that open epoxide rings by an SN2 mechanism. ____________ tautomers
    12·1 answer
  • Describe the nucleus of the atom. Include a description of its size relative to the rest of the atom.
    5·1 answer
  • Sample with a density of 4.0g/cm^3 and 3.5g, find the volume
    6·1 answer
  • The making of ice cubes is an endothermic reaction
    8·1 answer
  • Calculate the volume occupied by 55.5 moles of water at STP.
    6·1 answer
  • Which photographs show an object in orbit? Explain your answer.
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!