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
Alja [10]
3 years ago
14

100 mL of 1.0 M formic acid (HCOOH) is titrated with 1.0 M sodium hydroxide (NaOh).

Chemistry
2 answers:
nevsk [136]3 years ago
7 0
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

Do you mean at a pH = pKa, what is the fraction? 
<span>pH = pKa + log(base)/(acid) </span>
<span>4 = 4 + log (base)/(acid) </span>
<span>(base)/(acid) = 1 </span>
<span>So 50% has been converted.</span>
Bezzdna [24]3 years ago
7 0

Answer:

Fraction of carboxyl group that will have been converted to COO- = 50%

Explanation:

pKa of formic acid = 4

At pKa, titration is at equivalence point.

At equivalence point, number of moles of HCOOH undissociated is equal to number of moles of dissociated (HCOO^-)

(HCOOH)_{eq}= (HCOO^-)_{eq}

Thus, fraction of carboxyl group that will have been converted to COO-:

\frac{[HCOO^-]_{eq}}{[HCOO^-]_{eq}+[HCOOH]_{eq}} \times 100 = \frac{[HCOO^-]_{eq}}{[HCOO^-]_{eq}+[HCOO^-]_{eq}}

\frac{[HCOO^-]_{eq}}{2[HCOO^-]_{eq}} \times 100 = 50 \%

fraction of carboxyl group that will have been converted to COO- = 50%

You might be interested in
2.5 million atoms of a particular element have a mass of 8.33 x 10-16 grams. what is this element
jeyben [28]
Find the mass of one atom by:

8.33 x 10^{-16} / 2.5 x 10^{6}  = 3.32 x 10^{-22} g

Convert it into amu.
1 g = 6.022 x 10^{23} amu
so, 3.32 x 10^{-22}  x  6.022 x 10^{23}  =  200.6 amu

Now look at the periodic table and search for 200.6 amu element.
The element is Mercury (Hg)

5 0
3 years ago
Identify the functional groups attached to the benzene ring as either, being electron withdrawing, electron donating, or neither
Dominik [7]
-OH is elctron donating  -C=-N is electron withdrawing  -O-CO-CH3 is electron withdrawing  -N(CH3)2 is electron donating  -C(CH3)3 is electron donating  -CO-O-CH3 is electron withdrawing  -CH(CH3)2 is electron donating  -NO2 is electrong withdrawing  -CH2
8 0
4 years ago
For a typical titration, 0. 010 m naoh is the titrant (in the buret). if the initial buret reading is 2. 45 ml, and the final bu
pickupchik [31]

16.25 ml NaOH was used for the titration.

<h3>Titration:</h3>

"The process of calculating the quantity of a material A by adding measured increments of substance B, the titrant, with which it reacts until exact chemical equivalency is obtained (the equivalence point)" is the definition of titration.

A titration is a method for figuring out the concentration of an unknown solution by using a solution with a known concentration. Until the reaction is finished, the titrant (the known solution) is typically added from a buret to a known volume of the analyte (the unknown solution).

0. 010 m NaOH is the titrant (in the buret).

The initial buret reading is 2. 45 ml

The final buret reading is 18. 70 ml

The volume of NaOH = 18.70ml - 2.45 ml

                                    = 16.25 ml

Therefore, 16.25 ml NaOH was used for the titration.

Learn more about titration here:

brainly.com/question/27107265

#SPJ4

5 0
1 year ago
If the pH of the solution is 10, what is the [OH-] concentration?
swat32

Answer:

1×10^{-4}M

Explanation:

To solve this, you will need to do multiple steps.

Firstly, you will have to convert to pOH from pH, which is done by simply subtracting 14-10 to get a pOH of 4.

Then, use the following formula to calculate the [OH-} concentration:

[OH-]= 10^{-pOH}

When converted to Scientific Notation<u>,</u> you get a resulting answer of

<u>1×</u>10^{-4}M<u>.</u>

5 0
3 years ago
Write the recation of formation of ions by fluorine and potassium​
bekas [8.4K]

Answer: The reaction of formation of ions by fluorine and potassium​ is K^{+} + F^{-} \rightarrow KF.

Explanation:

Atomic number of potassium is 19 and its electronic distribution is 2, 8, 8, 1. So, in order to attain stability it needs to lose 1 electron due to which it forms K^{+} ion.

Atomic number of fluorine is 9 and its electronic distribution is 2, 7. In order to attain stability it needs to gain one electron and hence forms F^{-} ion.

Therefore, when both these ions come in contact with each other then it leads to the formation of KF compound.

The reaction equation for this is as follows.

K^{+} + F^{-} \rightarrow KF

Thus, we can conclude that the reaction of formation of ions by fluorine and potassium​ is K^{+} + F^{-} \rightarrow KF.

5 0
3 years ago
Other questions:
  • PLZZZZ HELP!!
    10·1 answer
  • Attached are two chemistry questions I need help with. thank you to whoever helps me out
    11·1 answer
  • A student has 5 mL of 0.300 M (NH4)2CrO4 solution. What is the concentration of NH4+ in this solution?
    11·1 answer
  • 14. Which of the following will result in a chemical change?
    13·1 answer
  • . Which of the following animals is sessile?
    8·2 answers
  • Lakes can disappear due to _
    11·1 answer
  • A positively charged wire is attracted to a negatively charged piece of metal. What force causes this?
    6·1 answer
  • What is the total number of mole of atoms in 1 mol of Cu(NO3)2 ?*
    12·1 answer
  • The energies of electrons are quantized. What does that mean?.
    14·1 answer
  • When you created hypotheses to guess whether each chemical was an acid or base, what specifically did you look for in the chemic
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!