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
Rainbow [258]
3 years ago
6

A solution is prepared by mixing the 50 mL of 1 M NaH2PO4 with 50 mL of 1 M Na2HPO4. On the basis of the information, which of t

he following species is present in the solution at the lowest concentration?Extra ContentH3PO4 <--> H+ + H2PO4- Ka1 = 7.2 E-3H2PO4- <--> H+ + HPO42- Ka2 = 6.3 E-8HPO42- <--> H+ + PO43- Ka3 = 4.5 E-13answer options:A. PO43-B. H2PO4-C. HPO42-D. Na+
Chemistry
1 answer:
barxatty [35]3 years ago
4 0

Answer:

A. PO43-

Explanation:

in the given is buffer . so H2PO4- and HPO42- both are present with equal concentration . Na+ is spectator ion it is also present in the concentration higher than the given species above .

but PO4-3 is not present . so it is lowest concentration

You might be interested in
Another way to say reactants is Question 4 options:
Mamont248 [21]

Answer:

I think the answer is B or Compounds

3 0
3 years ago
Does liquid evaporate with adding heat or losing it
Marysya12 [62]
Adding because evaporation speed is increased with increased temperature
6 0
3 years ago
Why did rutherford conclude from his gold foil experiment that an atom is mostly comprised of empty space?
Nady [450]
'cause many alpha-particle goes without any deflection........
6 0
3 years ago
This is science not chemistry
snow_lady [41]

That is actually physics because it talks about motion.

7 0
2 years ago
A bubble of helium gas has a volume of 0.65 L near the bottom of a large
Flura [38]

Answer:

0.73L

Explanation:

The following data were obtained from the question :

V1 = 0.65 L

P1 = 3.4 atm

T1 = 19°C = 19 + 273 = 292K

V2 =?

P2 = 3.2 atm

T2 = 36°C = 36 + 273 = 309K

The bubble's volume near the top can be obtain as follows:

P1V1 /T1 = P2V2 /T2

3.4 x 0.65/292 = 3.2 x V2 /309

Cross multiply to express in linear form as shown below:

292 x 3.2 x V2 = 3.4 x 0.65 x 309

Divide both side by 292 x 3.2

V2 = (3.4 x 0.65 x 309) /(292 x 3.2)

V2 = 0.73L

Therefore, the bubble's volume near the top is 0.73L

8 0
3 years ago
Other questions:
  • How much energy must be added to 2 mol H2O(g) to cause it to decompose into H2 and O2?
    13·2 answers
  • Phone / she /me / the / not / at / weekend / did​
    15·1 answer
  • A geologist wants to find more out more about a new discovery in his filed. What type of source should he consult
    15·1 answer
  • Lead ions can be removed from solution by precipitation with sulfate ions. Suppose a solution contains lead(II) nitrate.Write a
    15·2 answers
  • What is the meaning of polyatomic
    7·1 answer
  • The most stable conformation of 1,2-dibromoethane is:
    9·1 answer
  • What is the mass notation number of an atom that has 9 protons, 11 neutrons, and 9 electrons?
    10·1 answer
  • Why does gold sink and wood float when they have similar volumes?
    7·2 answers
  • Most terrestrial plants are members of this Division:
    10·2 answers
  • What is the number of electrons in an atom of scandium
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!