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
Nana76 [90]
3 years ago
9

What is the molarity of a NaOH solution if 28.2 mL of a 0.355 M H2SO4 solution is required to neutralize a 25.0-mL sample of the

NaOH solution?
Chemistry
1 answer:
Verdich [7]3 years ago
8 0

Answer:

[NaOH} = 0.4 M

Explanation:

In a reaction of neutralization, we determine the equivalence point of the titration. In this case, we have a strong base and a strong acid.

(H₂SO₄, is considered strong, but the first deprotonation is weak)

2NaOH  +  H₂SO₄  →  Na₂SO₄  + 2H₂O

As we have 2 protons in the acid, we need 2 OH⁻ from the base to form 2 molecules of water.

In the equivalence point we know mmoles of base = mmoles of acid

Let's finish the excersise with the formula

25 mL . M NaOH = 28.2 mL  .  0.355M

M NaOH = (28.2 mL  .  0.355M) / 25 mL → 0.400

You might be interested in
The atmosphere is the air surrounding Earth and is made up of 78% _____, 21% oxygen, and other trace gases. Please help this is
oksano4ka [1.4K]
The Earth is made up of 78% of water!!
4 0
2 years ago
Specialized proteins which function as catalysts for organic reactions are:
grigory [225]
Specialized proteins which function as catalysts for organic reactions are enzymes. 
4 0
3 years ago
Read 2 more answers
Which best explains the relationship between parent rock and soil<br><br> composition?
irina1246 [14]
<span>Soil is partially the result of the physical and chemical weathering of its parent rock. The minerals found in the soil were either in that parent rock, or they were formed from the weathering products of the parent rock.</span>
8 0
2 years ago
Why does it matter if atoms are divisible ???
Andreyy89

Atoms are divisible contrary to the early beliefs that the smallest "indivisible" matter is an atom. When an atom loses its identity it means that they are divisible. Atoms chemically react with other kinds of atoms thus changing their activity.

They certainly are not that important to our lives, but it’s good to know :)

5 0
2 years ago
Draw the product of the reaction CH3CH2CH2CH2C?CCH3+2Br2??
svetlana [45]
I will assume that the sign ? between the C and the CCH3 is a triple bond, and I will represent it by three vertical lines |||


So the reaction is:


<span>CH3CH2CH2CH2C ||| CCH3+2Br2 ---->


This is a typical reaction known as halogenation of alkines.


This is an addition reaction, i.e. the alkyne undergoes an addition of the Br2 (and it also happens with Cl2) to the triple bond to form a tetra halide.


.
                                                                                                      Br   Br
</span>                                                                                                        |     |
<span><span>CH3CH2CH2CH2C ||| CCH3+2Br2 ---->  CH3 CH2 CH2 CH2 C - C</span> - CH3
                                                                                                        |     |
                                                                                                        Br   Br


</span>
3 0
3 years ago
Other questions:
  • Which chemical formula shows an ionic compound?
    8·2 answers
  • A reaction occurs when solid X is placed into solution Y. As a result, the temperature of the new solution increases by 3°C.
    14·1 answer
  • What is the chemical formula of wood?
    6·1 answer
  • The gas in a 250. mL piston experiences a change in pressure from 1.00 atm to 4.45 atm. What is the new volume (in mL) assuming
    6·1 answer
  • Which of the following best describes an atom? * the smallest unit of living things only the smallest unit of an element the sma
    5·1 answer
  • What is the combined gas law?
    11·1 answer
  • What volume of carbon dioxide is produced when 6.40 g of methane gas, CH4 (g), reacts with excess oxygen? All gases are at 35.0C
    7·1 answer
  • What provides the energy to set the water cycle in motion?
    10·1 answer
  • If a sample of corn syrup has a mass of 35 grams and a volume of 25 mL calculate its density​
    8·1 answer
  • Identify the common substance that has the highest
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!