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
Tpy6a [65]
3 years ago
9

Imagine you have a 1.0 mL water sample containing 0.10 M hydrochloric acid, HCl. You want to get it to a safe pH of 6. How much

water do you need to add
Chemistry
1 answer:
AVprozaik [17]3 years ago
7 0

Answer:

See explanation below

Explanation:

In this case, HCl is a strong acid, therefore, it dissociates completely in solution.

To know the quantity of water we need to add, we first need to know the concentration of the acid with pH = 6:

[H⁺] = antlog(-pH)

[H⁺] = antlog(-6) = 1x10⁻⁶ M

This means that the concentration is being diluted.

Now, even if we add great quantities of water, and the concentration and volume change, there is one time that do not change despite the quantity of water added; this is the moles. So, all we have to do, is calculate the moles of the acid in the 1 mL of water, and then, the volume of the acid when it's dilluted:

moles HCl = 0.1 * (1/1000) = 1x10⁻⁴ moles

Now that we have the moles, we can calculate the volume which the acid with the lowest concentration has:

V = mol/M

V = 1x10⁻⁴ / 1x10⁻⁶

V = 100 L

This means that we need to add 99.999 mL of water

You might be interested in
If hydrochloric acid has a [H+] of 1.2 x 10-2 M, what is the pH?<br> 1.9<br> 0 1<br> 1.2<br> O<br> 8
Vanyuwa [196]

Answer:

<h2>1.9</h2>

Explanation:

The pH of a solution can be found by using the formula

pH = - log [ {H}^{+} ]

From the question we have

pH =  -  log(1.2 \times  {10}^{ - 2} )  \\  = 1.920818...

We have the final answer as

<h3>1.9</h3>

Hope this helps you

7 0
3 years ago
Read 2 more answers
Please help will give brainliest and brainly points tyty &lt;3
Tanya [424]

Answer:

Convection

Explanation:

3 0
3 years ago
Read 2 more answers
What is milliliter the same as?
Klio2033 [76]

Answer:

1 cubic centimeter

Explanation:

8 0
3 years ago
Read 2 more answers
What is the molality of a solution that contains 1.34 moles of NaCl in 2.47 kg of solvent
dsp73

The molality is 0.54 M when 1.34 moles of NaCl is present in 2.47 kg of solvent.

<u>Explanation:</u>

Molality is the measure of how much of amount of solute is dissolved in the solvent. So it is calculated as the ratio of moles of solute to the grams of solvent.

         \text {Molality}=\frac{\text {Moles of solute}}{\text {Mass of solvent}}

As in this case, the solute is NaCl and solvent is unknown. So the moles of solute is given as 1.34 moles and the mass of solvent is given as 2.47 kg.

Hence, \text { molality }=\frac{1.34}{2.47}= 0.54 \mathrm{M}

Thus, the molality is 0.54 M when 1.34 moles of NaCl is present in 2.47 kg of solvent.

8 0
3 years ago
Why polystyrene containers are used to store ice cubes?​
ASHA 777 [7]

Answer:

Hope this may help you

6 0
3 years ago
Other questions:
  • Will mark as Brainliest.
    12·2 answers
  • Help please ASAP 10 point
    8·1 answer
  • What is the charge on a fluorine ion? explain answer plz
    7·1 answer
  • Which activity would be an appropriate first step when designing an experiment?
    11·2 answers
  • This refers to the most powerful means of communicating confidence and conviction A.Posture B.eye contact C.body movement
    15·1 answer
  • (+1) + (–1) Its from edge
    7·1 answer
  • Severe or sudden changes in Earth's atmosphere can cause entire species of animals to die. When all of the members of species di
    7·1 answer
  • What is the molecular formula for a compound with an Empirical formula of C2H3, if the true Molar Mass is 81 g/mol:
    9·1 answer
  • Breathing equipment used by rescue workers needs to capture the CO2 the humans breath out and produce O2 for them to breath in,
    14·1 answer
  • Using the image below, describe in at least 2 paragraphs, what is happening with the arrows. Name and explain the processes and
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!