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LUCKY_DIMON [66]
2 years ago
8

An analytical chemist is titrating 181.2 mL of a 0.09000M solution of diethylamine ((CH) NH) with a 0.5400M solution of HNO3. Th

e pK, of diethylamine
is 2.89. Calculate the pH of the base solution after the chemist has added 26.9 ml of the HNO, solution to it.
9
00
Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HNO3 solution added.
Round your answer to 2 decimal places.
E
al.
PH - 0
х
5
?
Chemistry
1 answer:
gavmur [86]2 years ago
8 0

Answer:

874 por que mi pen3 ne tu ocncha

Explanation:

mkmkm

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Alona [7]

Question 1:

(a) Sulfurous acid: H2SO3

Sulfuric acid: H2SO4

(b) Nitrous acid: H2NO2

Nitric acid: H2NO3

Question 2:

To calculate the pH, based on concentration of H+ ions, there is one formula:

ph =   - log_{10}(c(h + ))

So the pH of this solution is

-  log_{10}( {10}^{ - 9} )  = 9

(the solution is basic).

5 0
3 years ago
35.0 mL of 12.0 M HCl is added to enough water to have a final volume of 1.20 L. What is the molarity of the final solution?
creativ13 [48]
<h3>Answer:</h3>

0.35 M

<h3>Explanation:</h3>

<u>We are given;</u>

  • Initial volume as 35.0 mL or 0.035 L
  • Initial molarity as 12.0 M
  • Final volume is 1.20 L

We are required to determine the final molarity of the solution;

  • Dilution involves adding solvent to a solution to make it more dilute which reduces the concentration and increases the solvent while maintaining solute constant.
  • Using dilution formula we can determine the final molarity.

M1V1 = M2V2

  • Rearranging the formula;

M2 = M1V1 ÷ V2

     = (12.0 M × 0.035 L) ÷ 1.2 L

      = 0.35 M

Thus, the final concentration of the solution is 0.35 M

6 0
3 years ago
Jean's mother lit a candle and placed it on his birthday cake. As they sang happy birthday, the wick burned, the wax
Greeley [361]

Answer:

The wick burning

Explanation:

7 0
3 years ago
Which statement is NOT true of molecular orbitals: Select one
trapecia [35]

Answer:

A: Antibonding molecular orbitals are higher in energy than all of the bonding molecular orbitals.

Explanation:

Molecular  orbital theory describes <u>covalent bonds in terms of molecular orbitals</u>, which  result from interaction of the atomic orbitals of the bonding atoms and are associated  with the entire molecule.

A bonding molecular orbital has lower  energy and greater stability than the atomic orbitals from which it was formed. An  antibonding molecular orbital has higher energy and lower stability than the  atomic orbitals from which it was formed.

Electrons in the antibonding molecular orbital have  higher energy (and less stability) than they would have in the isolated atoms. On the  other hand, electrons in the bonding molecular orbital have less energy (and hence  greater stability) than they would have in the isolated atoms.

5 0
3 years ago
How many atp can be produced from the complete oxidation of glucose if the malate-aspartate shuttle is used? choose one answer.
valina [46]
I know it a or b hope i help
7 0
3 years ago
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