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
Alex17521 [72]
2 years ago
10

What is the molarity of sodium ions in a solution prepared by diluting 250. mL of 0.550 M Na2SO4 to 1.25 L? (A) 0.110 M (C) 0.22

0 M (B) 0.138 M (D) 0.275 M
Chemistry
1 answer:
Leviafan [203]2 years ago
6 0

Answer:

(C) 0.220 M

Explanation:

Given parameters:

volume of the dillutant = 250mL = 0.25L

Molarity of Na₂SO₄ before being diluted = 0.55M

Volume of Na₂SO₄ after dilution = 1.25L

Unknown:

Molarity of Na⁺ ions in the diluted solution

Solution

We can simply adopt the mole concept in solving this dilution problem. During dilution, we intend to reduce the concentration of a particular solution by increasing its volume. Therefore, we have to find the new concentration of the diluted Na₂SO₄. From here, we can be able to find the molarity of the sodium ions in the  diluted solution:

      Using dilution equation:  \frac{C_{1} }{V_{1} } =  \frac{C_{2} }{V_{2} }

   we can solve for the molarity of the diluted solution

C₁ = concentration of the original solution

V₁ = volume of the original solution

V₂ = final volume of the diluted solution

C₂ = final volume

We are solving of C₂:

Making C₂ the subject of the formula gives:

                   C₂ = \frac{C_{1}V_{1} }{V_{2} }

           Therefore:

                    C₂ = \frac{0.25 x 0.55 }{1.25 } = 0.11M

The diluted concentration is now 0.11M

To find the molarity of Na⁺ in Na₂SO₄:

We write the ionic form of the compound in solution:

                            Na₂SO₄  → 2Na⁺ + SO₄²⁻

    In this solution,

           1 mole of Na₂SO₄ will produce 2 moles of Na⁺ ions

     From 0.11M of Na₂SO₄, we would have (2 x 0.11M) = 0.22M of Na⁺

The molarity of sodium ions will be 0.22M

               

You might be interested in
Which component is missing from the process of photosynthesis?
lisabon 2012 [21]
I believe the answer is 1-Water :)
3 0
2 years ago
Read 2 more answers
Is Pb(NO3)2 soluble or insoluble?
Sedaia [141]

Answer: it is soluble

Explanation: nitrates are soluble.

4 0
3 years ago
What is the Gibbs free energy?
Dimas [21]
It's a thermodynamic quantity equal to the enthalpy minus the product of entropy and the absolute temperature
7 0
3 years ago
Read 2 more answers
How many hybrid orbitals are found in CCl4? o one o two o three o four​
BlackZzzverrR [31]

Answer:

I Believe it is 4 orbitals s,p,p,p or aka sp^3

Explanation:

4 0
2 years ago
Read 2 more answers
How many moles of oxygen atoms are present in 30.5 grams of hydrogen peroxide (h2o2)?
Pepsi [2]

1.8 moles of oxygen atoms are present in 30.5 grams of hydrogen peroxide.

<u>Explanation:</u>

First we have to convert the given weight of hydrogen peroxide to molar mass of hydrogen peroxide. So for this, we have to divide the given weight with the molecular mass of hydrogen peroxide.

       \text {Molecular mass of } \mathrm{H}_{2} \mathrm{O}_{2}=(2 \times 1)+(2 \times 16)=2+32=34 \mathrm{g}

So,

     \text {Molar mass of } \mathrm{H}_{2} \mathrm{O}_{2}=\frac{30.5}{34}=0.90 \text { moles of } \mathrm{H}_{2} \mathrm{O}_{2}

Second step, in this moles, 2 molecules of oxygen are present. Thus 1 mole of Hydrogen peroxide consists of 2 moles of oxygen. Then,

        0.90 moles of $\mathrm{H}_{2} \mathrm{O}_{2}=2 \times 0.90=1.8$ moles of oxygen

So, 30.5 grams of hydrogen peroxide consists of 1.8 moles of oxygen.

4 0
2 years ago
Other questions:
  • eneegy is converted from solar to chemical in Process A and then from one form if chemical to another in Process B. Process A is
    11·1 answer
  • An ice cube is placed on a kitchen counter. Which best describes heat flow in this situation
    6·2 answers
  • One reaction involved in the conversion of iron ore to the metal is FeO(s) + CO(g) → Fe(s) + CO2(g) Use Hess’s Law to calculate
    15·1 answer
  • .
    10·2 answers
  • 6. The nuclear reaction where Si-30 becomes P-30 is
    14·1 answer
  • How many moles of NO are formed from 2.5 moles of NO2 if there is plenty of water present
    9·1 answer
  • Please match these thanks and have a great day!!! :)) due in 4 minutes
    5·1 answer
  • A. acidic
    12·1 answer
  • Help!!!!! please <br><br> there is no question just fill in the question marks
    12·2 answers
  • Key Concepts
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!