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
vredina [299]
3 years ago
7

Equal volumes of 0.1m naoh and 0.1m hcl are thoroughly mixed. the resulting solution has a ph closest to

Chemistry
1 answer:
son4ous [18]3 years ago
8 0
Lets assume x volume of NaOH and x volume of HCl are added together.
NaOH ---> Na⁺ + OH⁻
NaOH is a strong base therefore it completely ionizes and releases OH⁻ ions into the medium
HCl ---> H⁺ + Cl⁻
HCl is a strong base and completely ionizes and releases H⁺ ions in to the medium. number of NaOH moles in 1 L - 0.1 mol
Therefore in x L - 0.1 /1 * x = 0.1x moles of NaOH present 
Similarly in HCl x L contains - 0.1x moles of HCl
H⁺ + OH⁻ ---> H₂O
Due to complete ionisation, 0.1x moles of H⁺ ions and 0.1x moles of OH⁻ ions react to form 0.1x moles of H₂O. Therefore all H⁺ and OH⁻are completely used up and yield water molecules.
Then at this point the H⁺ and OH⁻ ions in the medium come from the weak dissociation of water. This is equivalent to 1 x 10⁻⁷M
pH = -log [H⁺]
pH = -log [10⁻⁷]
pH = 7
pH is therefore equals to 7 which means the solution is neutral
You might be interested in
Write a balanced net ionic equation for the following double replacement reaction
shtirl [24]

Answer:

Ba²⁺(aq) + SO₄²⁻(aq) ⟶ BaSO₄(s)  

Explanation:

There are three steps you must follow. You must write the:

  • Molecular equation
  • Ionic equation
  • Net ionic equation

A. Molecular equation

BaCl₂(aq) + Na₂SO₄(aq) ⟶ BaSO₄(s) + 2NaCl(aq)

B. Ionic equation

You write all the soluble substances as ions.

Ba²⁺(aq) + 2Cl⁻(aq) + 2Na⁺(aq) + SO₄²⁻(aq) ⟶ BaSO₄(s) + 2Na⁺(aq) + 2Cl⁻(aq)

C. Net ionic equation

To get the net ionic equation, you cancel the ions that appear on each side of the ionic equation.

Ba²⁺(aq) + <u>2Cl⁻(aq) </u>+ <u>2Na⁺(aq</u>) + SO₄²⁻(aq) ⟶ BaSO₄(s) + <u>2Na⁺(aq)</u> + <u>2Cl⁻(aq) </u>

The net ionic equation is

Ba²⁺(aq) + SO₄²⁻(aq) ⟶ BaSO₄(s)  

3 0
3 years ago
C3H18 +<br> O2<br> +<br> CO2 + H2O<br> Balance equation
dimulka [17.4K]

Answer:

2C3H18 + 15O2 ---->6CO2 +18H2O

Explanation:

the number of reactant must be equal to the number of product.

7 0
3 years ago
Type of change that produces a new substance
Salsk061 [2.6K]
A chemical change produces a new substances. Examples of chemical changes are burning a cooking egg
5 0
3 years ago
Read 2 more answers
Calculate the molecular mass or formula mass in any of CH4 NO2 SO3 C6H6 Nal
Zielflug [23.3K]

Answer:

Ch4 Is an ion so the molecule yes 5

Explanation:

Sry for bad Engish me polish

5 0
3 years ago
What pattern do we see when looking at the fossil record? *
iogann1982 [59]

Answer:

Organisms become more complex over time.

Explanation:

We all evolved from the first bacteria, which was relatively simple. We see over time that things become more adapted, slowly adding eyes, lungs, behavioral patterns, and consciousness.

3 0
3 years ago
Other questions:
  • The elements of the earth are in a constant process of being
    7·1 answer
  • Combining aqueous solutions of bai2 and na2so4 affords a precipitate of baso4. Which ions are spectator ions in the reaction?
    9·1 answer
  • The Dendrite Of Nerve Cells Send Or Receive Information?
    12·1 answer
  • What is the mass in grams of 5.25 x 1024 molecules of NaOH?
    6·1 answer
  • A 15 % salt (NaCl)solution is made with 750.0 grams of solution. What is the mass of sodium chloride used to make the solution?
    10·1 answer
  • The mass of an object is 100 mg. What is the object's mass in kg?
    11·2 answers
  • What cannot be changed by turning 100 grams of ice into water?
    11·1 answer
  • A weak acid, HA, has a pKapKa of 4.3574.357 . If a solution of this acid has a pH of 4.0054.005 , what percentage of the acid is
    5·1 answer
  • What is the overall trend for ionization energy on the periodic chart?
    5·2 answers
  • I need help with this pleas ASAP this is over due
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!