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
iren [92.7K]
3 years ago
5

During the titration of a diluted vinegar sample with a sodium hydroxide solution, the volume of sodium hydroxide used was less

than expected. Which of the following could account for the lower than expected volume?
A. The sodium hydroxide solution had been allowed to stand exposed to the air for a long time prior to the titration.
B. The volumetric flask used to prepare the diluted vinegar solution was rinsed with water prior to use.
C. The burette used to deliver the sodium hydroxide solution was rinsed with water prior to use.
D. The pipette used to deliver the vinegar solution was rinsed with water prior to use.
Chemistry
1 answer:
lapo4ka [179]3 years ago
6 0

Answer:

B and D could be true

Explanation:

A volume of sodium hydroxide less than expected could occurs for two reasons:

The real concentration of sodium hydroxide was higher than expected or the amount of vinegar added was less than expected:

A. The sodium hydroxide solution had been allowed to stand exposed to the air for a long time prior to the titration.  FALSE. A long expose  to the air decreases concentration of the NaOH.

B. The volumetric flask used to prepare the diluted vinegar solution was rinsed with water prior to use.  TRUE. You add a less amount of vinegar doing you require less amount of NaOH than expected.

C. The burette used to deliver the sodium hydroxide solution was rinsed with water prior to use.  FALSE. Thus, you add a less amount of NaOH than expected. To explain the matter, you add more NaOH than expected.

D. The pipette used to deliver the vinegar solution was rinsed with water prior to use. TRUE. Again, you are adding a less amount of Vinegar than expected doing the necessary NaOH during titration less than expected

You might be interested in
How much water vapor can a cubic meter of air hold at 25 degrees celcius
Thepotemich [5.8K]
I think you might find your answer here https://answers.yahoo.com/question/index?qid=20121101101721AAeZyHE
5 0
3 years ago
Read 2 more answers
Which of the following describes a property of water that helps sustain marine life forms?
Mariana [72]

Answer:

Open spaces in water's solid structure makes its solid state less dense than its liquid state.

Explanation:

  • Water unlike other liquids is special. It contracts when cooled, down to a temperature of 4°C but thereafter begins to expand as it reaches 0°C and turns into ice.
  • This property is useful for the preservation of marine life in very cold temperatures. During winter, the surface water in water lakes and rivers starts cooling. Upon reaching the temperature of 4°C, the surface water descends to the bottom as it denser.
  • This help in the maintenance of temperature of the water at the bottom at 4°C. It is in this layer that marine life is sustained.
4 0
3 years ago
What does an algae cell, tree,mushroom, and animal have in common
wel
Each one is a living organism.
5 0
3 years ago
Wh
sergey [27]

The correct option would be 3.

Only thermal energy changes


Hope this helps you

Brainliest would be appreciated

-AaronWiseIsBae

5 0
3 years ago
Read 2 more answers
Use the solubility rules from the Lab 4 introduction and your knowledge of qualitative separation schemes from the lab to answer
cluponka [151]

Answer:

a13+a13

Explanation:

4 0
2 years ago
Other questions:
  • . A golfer hits a golf ball with a club. The mass of the ball is 0.05 kg. The ball accelerates at 2,000 m/s2. What is the net fo
    14·1 answer
  • How many grams of nh3 can be produced from the reaction of 28 g of n2 and 25 g of h2
    5·1 answer
  • Can someone please help me on the second quick Check!!!!
    5·1 answer
  • How many moles of solute are in 9.03 M solution with 15.8 L of solution?
    5·1 answer
  • On Greg's last visit to his doctor, he complained of feeling tired. Sandra, the registered nurse, withdrew 6.5 mL of blood, whic
    11·1 answer
  • A new engine is being designed that will carry 5.430 x 102 kilograms of methane, CH4, on board. How many liters of gaseous oxyge
    11·1 answer
  • Why are cations positive?
    8·2 answers
  • It is the combination of the uppermost mantle and the crust​
    5·1 answer
  • ​​​​​​Elements on the far right of the periodic table are
    12·1 answer
  • What is the general formula for a straight-chain alkane?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!