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
JulijaS [17]
2 years ago
14

The approximate concentration of the NaOH solution you will prepare in Part A of this experiment is 0.12M. Calculate the number

of moles and the number of grams of oxalic acid (H2C2O4 •2H20) that will be required to neutralize 25 mL of this NaOH solution.​
Chemistry
2 answers:
zhuklara [117]2 years ago
3 0

Answer:

0.0015moles

0.135g

Explanation:

Given parameters:

Volume of NaOH = 25mL  = 0.025L

Molarity of NaOH = 0.12M

Unkown:

Number of moles of oxalic acid = ?

mass of oxalic acid = ?

Solution:

The reaction equation is shown below:

                              H₂C₂O₄ + 2NaOH  →  Na₂C₂O₄ + 2H₂O

   Solving:

We should work from the known to the unknown. The known here is NaOH.

  • First find the number of moles of the base, NaOH
  • Then using the equation find the number of moles of acid.
  • Then find the mass of the acid from the number of moles

##

 Number of moles of NaOH = molarity of NaOH x volume = 0.12 x 0.025 = 0.003mole

##

 From the equation:

       2 moles of NaOH reacted with 1 mole of the acid

      0.03 mole of NaOH will react with \frac{0.003}{2} = 0.0015moles of oxalic acid

##

Mass of oxalic acid = number of moles x molar mass

   Molar mass of oxalic acid = (2 x 1)  + (2 x 12) + (4 x 16) = 90g/mol

Mass of oxalic acid = 0.0015 x 90 = 0.135g of oxalic acid.

aev [14]2 years ago
3 0

Answer:

number of grams of oxalic acid = 0.135 g

Explanation:

Thinking process:

The reaction equation of hydrated oxalic acid  is shown below:

 H₂C₂O₄ + 2NaOH  →  Na₂C₂O₄ + 2H₂O

number of moles of NaOH = concatenation × volume

concentration of NaOH =  0.12M

volume of NaOH            = 25 ml

                                       = 0.025 l

The number of moles    = 0.025 * 0.12\\= 0.003 moles

The mole ratio of oxalic acid is half the number of moles of NaOH = 0.5 * 0.003\\= 0.0015 mol

Molar mass of oxalic acid  = 90.03

number of moles = \frac{mass}{molar mass}

mass = number of moles * molar mass\\ = 0.0015 * 90.03\\ = 0.135 g

You might be interested in
A plant living in the environment shown in the picture would have to be adapted not to loose to much water through its___
Ray Of Light [21]

Answer:

Many plants have thorns on their stems or leaves. What is the MOST likely explanation for the evolution of thorns?

A) Thorns help plants produce more food from photosynthesis.

B) Thorns are an example of a mutation that arises in the genetic code of plants.

C) Thorns help plants to conserve resources like water and soil nutrients that may be used by other organisms.

D) Thorns are an adaptation that some plants have evolved in order to discourage herbivores from eating the plant.

2)

Explanation:

5 0
2 years ago
Read 2 more answers
Which of the following instruments is used to measure air pressure?
bogdanovich [222]
Air pressure is measured with a barometer.
4 0
3 years ago
Read 2 more answers
The radius of a lithium atom is 130 picometers, and the radius of a fluorine atom is 60 picometers. The radius of a lithium ion,
natali 33 [55]

Answer:

A positive ions is always smaller than the corresponding atom.

A negative ion is always larger than the corresponding atom.

Explanation:

The reason for this is that, when a positive ion is formed, a full shell is usually removed with its electrons thereby reducing the size of the electron cloud and decreasing the size of the electron cloud.

A negative ion is formed by addition of more electrons to the electron cloud hence it spreads out. Interelectronic repulsion accounts for the larger size of the negative ion.

3 0
3 years ago
Which of the following is NOT a binary molecular compound?<br> KI <br> H2s<br> CO<br> CIF3
shutvik [7]
I believe KI is not a a binary molecule.
Your welcome
7 0
3 years ago
HELPPPPPPPPPPPPPPPPPPPPPPPP MEEHHHHHHHHHHHHHH
AnnZ [28]
Here you are looking on the Free Body diagram of a net force of 0N in both the x and y-directions.  the only ones that has that condition met is A and C.
4 0
3 years ago
Other questions:
  • Suppose a mountain range is made up of 18 mountains, each mountain has
    6·1 answer
  • An unknown element is shiny and is found to be a good conductor of electricity, what other properties would you predict for it
    9·1 answer
  • Water molecules have unique physical and chemical properties that enable them to perform important functions in living organisms
    13·1 answer
  • Answer and I will give you brainiliest <br><br><br>​
    9·2 answers
  • g Imagine that you found a piece of carved wood that has been embedded in glacial ice. The mass of the wood is 50 grams, and 30%
    15·1 answer
  • For the reaction between ammonium phosphate and lead (IV) nitrate, producing ammonium nitrate and lead (IV) phosphate, how many
    14·1 answer
  • 2C6H6+15O2=12CO2+6H20 the reaction above is classified as​
    11·2 answers
  • What is the percentage of nitrogen, by mass, in calcium nitrate?.
    6·1 answer
  • Which term describes energy stored in the bonds between atoms?
    14·1 answer
  • Help me please this'll cost me half of my grade
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!