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
MatroZZZ [7]
3 years ago
13

What are the concentrations of hydroxide and hydronium ions in a solution with a pH of 10.2?

Chemistry
2 answers:
arsen [322]3 years ago
7 0

Answer: The correct option is, (D) 6.3\times 10^{-11}M  and 1.6\times 10^{-4}

Explanation:  pH is the measure of acidity or alkalinity of a solution.

pH=-\log [H^+]

10.2=-\log [H^+]

[H^+]=6.30\times 10^{-11}

Now we have to calculate the concentration of OH^- ions.

pH+pOH=14\\\\pOH=14-pH\\\\pOH=14-10.2=3.8

Now we have to calculate the OH^- concentration.

pOH=-\log [OH^-]

3.8=-\log [OH^-]

[OH^-]=1.6\times 10^{-4}M

Therefore, the H^+ concentration is 6.3\times 10^{-11}and OH^- concentration is, 1.6\times 10^{-4}M

nordsb [41]3 years ago
6 0
<h3><u>Answer;</u></h3>

6.3 × 10–11 M H3O+ and 1.6 × 10–4 M OH–

<h3><u>Explanation;</u></h3>

pH = -log [H3O+]

Therefore;

if pH is 10.2; then;

[H3O+] = -in(pH)

           = 10^-10.2

          <u> =6.3 × 10–11 M H3O+ </u>

But; pH + pOH = 14

Therefore;

pOH = 14 - 10.2

        = 3.8

But; pOH = -log [OH-]

[OH] = In pOH

        = 10^-3.8

        <u>= 1.6 × 10^-4 M OH-</u>

You might be interested in
`You have to be careful about pouring drano down your pipes since it is mainly hydrochloric acid--you can't do it if they are ma
Zanzabum

Answer:

6.67 moles

Explanation:

Given that:-

Moles of hydrogen gas produced = 10.0 moles

According the reaction shown below:-

2Al + 6HCl\rightarrow 2AlCl_3 +3H_2

3 moles of hydrogen gas are produced when 2 moles of aluminium undergoes reaction.

Also,

1 mole of hydrogen gas are produced when \frac{2}{3} moles of aluminium undergoes reaction.

So,

10.0 moles of hydrogen gas are produced when \frac{2}{3}\times 10.0 moles of aluminium undergoes reaction.

<u>Moles of Al needed  = \frac{2}{3}\times 10.0 moles = 6.67 moles</u>

6 0
3 years ago
If you have 12.5g of fluoride and 16.2g of sodium, which is the limiting reactant and how sodium fluoride in grams is your theor
Korvikt [17]

Answer:

F2 is the limiting reactant

27.6 grams of NaF is produced.

Explanation:

Balance the equation first.

2Na+ F2 ---> 2NaF

To find the limiting reactant, solve for how much NaF can be produced with Na and F2

12.5g F2 x (1 mole F2/ 38.00 grams F2)x (2 mole NaF/ 1 mole F2)

=0.658 moles NaF

16.2g Na x (1 mole Na/ 22.99 grams Na)x (2 mole NaF/ 2 mole Na)

=0.705 moles NaF

Since F2 produced the least NaF, F2 is the limiting reactant.

Now, to find how much NaF there is, use the moles solved above with F2 as the limiting reactant.

0.658 moles NaF x (41.99 grams NaF/ 1 mole NaF)= 27.6 moles NaF

27.6 moles of NaF would be theoretically produced.

8 0
3 years ago
__________ is designed to protect you from injuries to your head, face, eyes, ears, hands, feet, respiratory tract, and body. A.
Nadusha1986 [10]
_________ is designed to protect you from injuries to your head, face, eyes, ears, hands, feet, respiratory tract, and body
the answer to this question, is B personal protective equipment
hope this helps :D
3 0
3 years ago
Read 2 more answers
If a bar magnet's neutral region is broken into two, what will most likely occur? A. Neither segment will have a north or south
grigory [225]
The answer is D I JUST TOOKM THE TEST
8 0
3 years ago
Read 2 more answers
*10 points* PLS HELP!!!!!!!!!!!!!!!!
CaHeK987 [17]
Aluminum foil I think but if not goodluck :)
5 0
3 years ago
Read 2 more answers
Other questions:
  • A sample of fluorine gas exerts a pressure of 900 mmHg. When the pressure is changed to 1140 mmHg, the volume is 250 mL. What wa
    5·1 answer
  • What element has the atomic mass 26.981538​
    5·1 answer
  • I really need help with this!
    13·1 answer
  • The acidic substance in vinegar is acetic acid, HC2H3O2 When 4.00 g of a certain vinegar sample was titrated with 0.200 M NaOH,
    5·1 answer
  • Annie has a soccer ball and a kickball she kicks each ball with the same force the soccer ball accelerates at 3 m/s to the secon
    13·1 answer
  • Why does the pH of the acid solution initially increase very slowly when metal is first added to the acid solution, but graduall
    10·1 answer
  • A wave is a disturbance that carries...
    5·1 answer
  • Compounds
    8·2 answers
  • Which of these items found on a food label IS NOT a food?
    7·1 answer
  • 4. A 14.5-L balloon is in the air where it is 20.0 C at 0.980-atm. A wind passes over and the balloon's pressure becomes 740.0-m
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!