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
olganol [36]
2 years ago
13

A 25.0mL sample of an acetic acid solution is titrated with a 0.175M NaOH solution. The equivalence point is reached when 37.5mL

of the base is added. The concentration of acetic acid in the sample was :_________.A) 0.263
B) 0.365
C) 0.175
D) 1.83×10−4
E) 0.119
Chemistry
1 answer:
11Alexandr11 [23.1K]2 years ago
7 0

Answer:

Explanation:

First of all, let's write the equation of the reaction.

CH₃COOH + NaOH  ⇒ CH₃COONa + H₂O

The formula to be used here is CaVa/CbVb = na/nb

where Ca is the concentration of the acid (?)

Cb is the concentration of the base (0.175M)

Va is the volume of the acid (25 mL)

Vb is the volume of the base (37.5 mL)

na is the number of moles of acid (1)

nb is the number of moles of base (1)

Ca × 25/0.175 × 37.5 = 1/1

Ca = 0.175 × 37.5 × 1 /25 ×1

Ca = 0.263 M

The concentration of the acid in the sample was 0.263 M

You might be interested in
Choose the correct name for each acid. Click here
Zigmanuir [339]

Answer:

1. Nitrous Acid

2. Hydroiodic Acid

3. Phosphoric Acid

Explanation:

Just did the lesson

7 0
3 years ago
Read 2 more answers
In regard to protective actions for explosive devices, the area where the blast originates is referred to as ___________ perimet
lianna [129]
This is to fill in the answer to the question.

The area where the blast originates is referred to as <span>Scene Perimeter/Isolation Zone. This whole area is dangerous for people since it can contain harmful gasses or falling debris depending on the environment of the blast. 


</span>
7 0
3 years ago
How can you tell when a solution is formed?
zhuklara [117]
You may tell when a solution os formed when the item or particle, such as sugar or salt,
dissolves completely in the solvent, such as water. 

Basically, you know when a solution is formed when the material you have placed in the solvent disappears :P
5 0
3 years ago
Read 2 more answers
How many molecules are in 1.28 mols of silicon dioxide​
coldgirl [10]

Answer:

7.71x10^23 molecules

Explanation:

Avogadro's # = 6.022x10^23

1.28 mol SiO2 x 6.022x10^23/ 1 mol SiO2 = 7.71x10^23 molecules

8 0
3 years ago
The volume of a sphere is (4/3πr3 and the density of copper is 8.96g/cm3. part a what is the radius (in cm of a pure copper sphe
ira [324]
<span> <span> </span></span>Volume = 4/3 * PI * r^3

1.59 x 10^24 copper atoms = 2.64 moles of copper
Atomic Mass of copper = 63.55
2.64 * 63.55 = 167.77 grams of copper
Volume of Copper = Mass / Density
Volume of Copper = 167.77 grams / 8.96
Volume of Copper = <span> <span> 18.72</span></span> cubic centimeters

r^3 = Volume / (4/3 * PI)
r^3 = 18.72 / 4.188
r^3 = <span> <span> <span> 4.47
radius = </span></span></span><span><span><span>1.647</span> centimeters

</span></span>
8 0
3 years ago
Other questions:
  • Why do we use anhydrous diethyl ether? Choose the right answer.
    11·1 answer
  • What happens to light when it enters a lens?
    12·1 answer
  • 3. Which of the following is not true for atoms? (4 points) They combine to form elements and molecules. They contain negatively
    7·1 answer
  • How many atoms are in 3.63 mol CH2Cl2?
    6·1 answer
  • A meteorite is
    6·1 answer
  • How many grams are in 1,000 Lutheran of C2H4
    10·1 answer
  • There are 300 light particles in an airtight container. Which adjustment would increase the speed of the particles?
    7·1 answer
  • Layer F can help scientists to correlate the relative age of another layer. What makes layer F useful for relative dating?
    8·2 answers
  • B) Explain if the fossil evidence supports the idea that each cycle takes a long period of time.
    9·1 answer
  • What happens to the electron cloud at very high atomic numbers, when the innermost electrons would, using a non-relativistic mod
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!