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
tresset_1 [31]
3 years ago
5

What is the molar concentration of [H3O+] in a cola that has a pH of 3.120?

Chemistry
1 answer:
ELEN [110]3 years ago
8 0

Answer:

  • [H₃O⁺] = 7.586×10⁻⁴ M

Explanation:

The <em>pH</em> of a solution is a measure of the <em>molar concentration of </em><em>H₃O⁺</em> ions in the solution.

The mathematical expresssion that states the relation between the molar concentration of H₃O⁺ ions and the pH of the solution is:

  • pH = - log [H₃O⁺].

This is pH is numerically equal to the negative decimal logarithm of the  molar concentration of H₃O⁺.

The square brackets are used to indicate molar concentration.

Thus:

  • pH = - log [H₃O⁺] ← equation
  • 3.120 = -log [H₃O⁺] ← substituting values
  • - 3.120 = log [H₃O⁺] ← product property of the multiplication
  • 10^{- 3.120}=[H_3O^+] ← antilogarithm property
  • [H₃O⁺] = 7.586×10⁻⁴ M ← result
You might be interested in
If an object increases in speed, it must be as a result of
zhenek [66]
DkskdjejisdjejkZjdjejasj
3 0
3 years ago
Read 2 more answers
Current passes through a solution of sodium chloride. In 1.00 second, 2.68×1016Na+ ions arrive at the negative electrode and 3.9
EleoNora [17]

Answer : The current passing between the electrodes is, 1.056\times 10^{-2}A

Explanation :

First we have to calculate the charge of sodium ion.

q=ne

where,

q = charge of sodium ion

n = number of sodium ion = 2.68\times 10^{16}

e = charge on electron = 1.6\times 10^{-19}C

Now put all the given values in the above formula, we get:

q=(2.68\times 10^{16})\times (1.6\times 10^{-19}C)=4.288\times 10^{-3}C

Now we have to calculate the charge of chlorine ion.

q'=ne

where,

q' = charge of chlorine ion

n = number of chlorine ion = 3.92\times 10^{16}

e = charge on electron = 1.6\times 10^{-19}C

Now put all the given values in the above formula, we get:

q'=(3.92\times 10^{16})\times (1.6\times 10^{-19}C)=6.272\times 10^{-3}C

Now we have to calculate the current passing between the electrodes.

I=\frac{q}{t}+\frac{q'}{t}

I=\frac{4.288\times 10^{-3}}{1.00}+\frac{6.272\times 10^{-3}}{1.00}

I=1.056\times 10^{-2}A

Thus, the current passing between the electrodes is, 1.056\times 10^{-2}A

4 0
3 years ago
What are the two fundamental portions of an atom?​
Mice21 [21]
Number of Protons in an Uncharged Atom
The two main components of an atom are the nucleus and the cloud of electrons. The nucleus contains positively charged and neutral subatomic particles, whereas the cloud of electrons contains tiny negatively charged particles.
4 0
3 years ago
Explain the relationship between cell, tissue and organs.
kobusy [5.1K]

Answer:

The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs.

7 0
3 years ago
Read 2 more answers
Formula of a substance in water is followed by what symbol
snow_lady [41]
The substance is followed by H2O
8 0
3 years ago
Other questions:
  • What data should be plotted to show that experimental concentration data fits a zeroth-order reaction?
    15·1 answer
  • What do diamonds , the lead in pencils and coal have in common?
    6·1 answer
  • At STP, what physical property of aluminum always remains the same from sample to sample?
    6·1 answer
  • What other elements does zinc bond with?
    15·1 answer
  • How many different elements have scientists discovered? 12, 112, 118, or more than 500?
    7·1 answer
  • What volume of the 5.00% (w/v) citrie acid solution described above would be needed to provide 738 mg citric acid for a reaction
    10·1 answer
  • D= Sx2
    6·1 answer
  • Which elements form ions that are usually colored in solid compounds and in solution? A. alkali metals B. alkaline earth metals
    6·1 answer
  • In what area of the united states do the fewest people live​
    8·2 answers
  • How can mechanical waves help in the treatment of cancer?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!