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
Svet_ta [14]
3 years ago
10

Calculate the ph of a 0.005 m solution of potassium oxide k2o

Chemistry
1 answer:
Alecsey [184]3 years ago
3 0
First, we have to see how K2O behaves when it is dissolved in water:

K2O + H20 = 2 KOH

According to reaction K2O has base properties, so it forms a hydroxide in water.
For the reaction next relation follows:

c(KOH) : c(K2O) = 1 : 2

So,

c(KOH)= 2 x c(K2O)= 2 x 0.005 = 0.01 M = c(OH⁻)

Now we can calculate pH:

pOH= -log c(OH⁻) = -log 0.01 = 2

pH= 14-2 = 12




You might be interested in
The _____ carries no electrical charge in the atom. electron proton gluon neutron
vovikov84 [41]
The proton has a positive charge and the election balances out the proton by being negatively charged. The neutral charge, meaning it is neither positively or negatively charged. A good way to remember is to think that the neutron is neutral.
6 0
3 years ago
Read 2 more answers
I just need help with question 10.??? Please ASAP
Alex

Answer:

4 hydrogen / 1 Carbon

Just look at the diagram

4 0
3 years ago
When cyclopentane undergo free-radical substitution with bromine (Br2 /Heat) the product:
Artemon [7]

Explanation:

b. Bromo cyclopentane + HBr

4 0
3 years ago
What are the very reactive gasses of the periodic table called
kipiarov [429]

the very reactive gasses of the periodic table are called halogens.

4 0
4 years ago
Read 2 more answers
You have at your disposal 3 1-pound bags of various pure salts that dissolve readily in water. You can add one of the bags to a
Sedaia [141]

Answer:

This question appears incomplete

Explanation:

However, it should be noted that addition of soluble salts generally lowers the freezing point of water hence after the addition, water will no longer freeze at 0°C but lower.

Soluble salts tend to form more ions in water, it is these ions that are responsible for interfering with the hydrogen bonds hence lowering the freezing. Thus, (since each bag are of the same weight) <u>the bag that contains the salt that ionizes more in water will lower the freezing point by the greatest amount</u>.

NOTE: Different weight of the salts could lead to more ions been formed in the water by some salts as against the other.

6 0
4 years ago
Other questions:
  • In an exothermic reaction, chlorine reacts with 2.0200g of hydrogen to form 72.926g of hydrogen chloride gas. how many grams of
    14·1 answer
  • Carbon monoxide reacts with oxygen gas to form carbon dioxide according to the following chemical equation. 2CO(g)+O2(g)⟶2CO2(g)
    13·1 answer
  • Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A soluti
    7·1 answer
  • Which of the following is the least likely to remain homogeneous?
    13·1 answer
  • Table sugar is not a mineral because: it is made of more than one element. it is not made by a geologic process. Its chemical co
    15·1 answer
  • How many S’s are in 3 Al(SO4)3
    8·2 answers
  • For the decomposition of A to B and C, A(s)⇌B(g)+C(g) how will the reaction respond to each of the following changes at equilibr
    10·1 answer
  • Draw the Lewis structures of N2H4, N2H2, and N2.Draw the molecules by placing atoms on the grid and connecting them with bonds.
    13·1 answer
  • WHICH STATE OF MATTER IS THIS: PARTICLES VIBRATE AND CHANGE POSITION
    14·2 answers
  • Which of the following pairs of elements is most likely to form an ionic bond?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!