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
hammer [34]
3 years ago
6

What would be the effect of each of the following sources of error on the molarity of H2SO4 determined in this experiment? State

whether the concentration of H2SO4 obtained would be too high or too low. Explain your answer briefly.
a. The burette is contaminated with an acid solution.
[1 mark]

•

b. The burette contains a large air bubble in the tip, which disappears during the titration [1mark]

c. A small volume of the acid is spilled when you transfer it into the Erlenmeyer flask
[1 mark]
Chemistry
1 answer:
Dafna11 [192]3 years ago
7 0

Answer:

The burette is contaminated with an acid solution- The concentration is too high

The burette contains a large air bubble in the tip, which disappears during the titration- The concentration of the acid is too low.

A small volume of the acid is spilled when you transfer it into the Erlenmeyer flask- The concentration of the acid is too low.

Explanation:

The molality of a solution is the number of moles of solute per liter of solution. The concentration of an unknown solution is obtained by titration against a standard solution of acid or base whose concentration  is known. It is a volumetric method of analysis.

If the burette is contaminated with the acid, then the concentration of the base that reacts with the acid is less than the stated amount and consequently the concentration of the acid calculated is higher than it should be.

If the tip of the burette contains air bubbles, the volume of the acid reported is less than the volume of acid actually delivered during the titration hence the calculated concentration of the acid is too low.

If some volume of acid is spilled when you transfer the acid into the Erlenmeyer flask, the volume of the acid reacted is decreased and consequently the calculated concentration of the acid is too low.

You might be interested in
How do I do molarity equations?
ipn [44]
To calculate the molarity of a solution, you divide the moles of solute by the volume of the solution expressed in liters. Note that the volume is in liters of solution and not liters of solvent. When a molarity is reported, the unit is the symbol M and is read as “molar”.
I hope this helped :)
Please make me the branliest! Have a good night/ good day!!
8 0
3 years ago
Are s blocks metals ?
Mamont248 [21]
Yes, S-blocks are metals except for helium and hydrogen.  The S-block metals are shiny, silvery and relatively soft, although they can easily lose electrons.  Helium and hydrogen have valence electrons but also lack some similar properties as the other metals.
8 0
3 years ago
Calculate the cfse for a d^3 system in an octahedral field in units of ∆_o. In other words, do not enter "∆_o" with your answer.
Rudik [331]

Magnetic moment (spin only) of octahedral complex having CFSE=−0.8Δo and surrounded by weak field ligands can be : Q

To answer this, the Crystal Field Stabilization Energy has to be calculated for a (d3 metal in both configurations. The geometry with the greater stabilization will be the preferred geometry. So for tetrahedral d3, the Crystal Field Stabilization Energy is: CFSE = -0.8 x 4/9 Δo = -0.355 Δo.

[Co(CN)64-] is also an octahedral d7 complex but it contains CN-, a strong field ligand. Its orbital occupancy is (t2g)6(eg)1 and it therefore has one unpaired electron. In this case the CFSE is −(6)(25)ΔO+(1)(35)ΔO+P=−95ΔO+P.

The crystal field stabilization energy (CFSE) (in kJ/mol) for complex, [Ti(H2O)6]3+. According to CFT, the first absorption maximum is obtained at 20,3000cm−1 for the transition.

To learn more about crystal field stabilization energy  visit:brainly.com/question/29389010

#SPJ4

8 0
1 year ago
A chemical reaction that is expected to form 325.0 gof product only forms 123.8 g of product. What is the percent yield of this
Tasya [4]

Answer:

\boxed {\boxed {\sf A. \ 38.1 \%}}

Explanation:

Percent yield is the ratio of the amount actually produced to how much could theoretically be produced. It is found using this formula:

\% \ yield = \frac{actual \ yield}{theoretical \ yield} *100

For this reaction, the theoretical or expected yield is 325.0 grams. The actual yield is 123.8 grams.

\% \ yield = \frac{ 123.8 \ g }{325.0 \ g }*100

Divide.

\% \ yield = 0.380923077 *100

\% \ yield = 38.0923077

Round to the nearest hundredth. The 9 in the hundredth place tells us to round the 0 to a 1 .

\% \ yield \approx 38.1

The percent yield is about <u>38.1%</u>

5 0
3 years ago
Read 2 more answers
When two ionic compounds are dissolved in water, a double replacement reaction can... Group of answer choices occur if two of th
sergey [27]

Answer:

occur if two of the ions form an insoluble ionic compound, which precipitates out of solution

Explanation:

When two ionic compounds are dissolved in water, a double replacement reaction takes place if two of the ions form an insoluble ionic compound, which precipitates out of solution. In double displacement reaction ions switch partners. And hence, produce an insoluble precipitate.

5 0
3 years ago
Other questions:
  • What is the main component of the earths ancient atmosphere?
    13·1 answer
  • In a popular song from 1970, the musical group Crosby, Stills, and Nash use the line, "We are stardust." Why is this statement t
    10·2 answers
  • Boron (B) has two isotopes, boron-10 and boron-11. The atomic weight of boron is ?
    12·1 answer
  • Choose the solvent below that would show the greatest freezing point lowering when used to make a 0.20 m nonelectrolyte solution
    9·1 answer
  • How many molecules are there in 237 grams of CCl4
    13·1 answer
  • To pull up a bucket of water from a well, George pulled hard on a handle to wind up a rope. Which kind of energy was George appl
    13·1 answer
  • The core of the pyruvate dehydrogenase complex is made up of eight catalytic________that make up the_______component.
    8·1 answer
  • An atom gains electrons to become negatively charged
    12·1 answer
  • Choose one natural resource that is nonrenewable. In three to five sentences, describe two impacts that come from obtaining this
    11·1 answer
  • Graph the circle which is centered at (4,4)(4,4)left parenthesis, 4, comma, 4, right parenthesis and has a radius of 3 units.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!