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
mash [69]
2 years ago
7

(25 Points) Choose acid, base, or neutral.

Chemistry
1 answer:
MaRussiya [10]2 years ago
6 0

Answer:

Hydrogen ions are spontaneously generated in pure water by the dissociation (ionization) of a small percentage of water molecules into equal numbers of hydrogen (H+) ions and hydroxide (OH–) ions. The hydroxide ions remain in solution because of their hydrogen bonds with other water molecules; the hydrogen ions, consisting of naked protons, are immediately attracted to un-ionized water molecules and form hydronium ions (H30+). By convention, scientists refer to hydrogen ions and their concentration as if they were free in this state in liquid water.

2

H

2

O

⇋

H

3

O

+

+

OH

−

2H2O⇋H3O++OH−

The concentration of hydrogen ions dissociating from pure water is 1 × 10-7 moles H+ ions per liter of water. The pH is calculated as the negative of the base 10 logarithm of this concentration:

pH

=

−

l

o

g

[

H

+

]

pH=−log[H+]

The negative log of 1 × 10-7 is equal to 7.0, which is also known as neutral pH. Human cells and blood each maintain near-neutral pH.

pH Scale

The pH of a solution indicates its acidity or basicity (alkalinity). The pH scale is an inverse logarithm that ranges from 0 to 14: anything below 7.0 (ranging from 0.0 to 6.9) is acidic, and anything above 7.0 (from 7.1 to 14.0) is basic (or alkaline ). Extremes in pH in either direction from 7.0 are usually considered inhospitable to life. The pH in cells (6.8) and the blood (7.4) are both very close to neutral, whereas the environment in the stomach is highly acidic, with a pH of 1 to 2.

You might be interested in
Which of the following is an organic compound
mel-nik [20]
An Organic Compound is when Hydrogen and Nitrogen are bonded.

Therefore A is the answer
6 0
3 years ago
Read 2 more answers
How does the atmosphere help to make Earth livable? Check all that apply.
Likurg_2 [28]

Answer:

- contains oxygen

- provides warmth

- blocks harmful energy from the Sun

Explanation:

The atmosphere is crucial when it comes to providing living conditions on Earth. The gases in the atmosphere manage to balance the things just about right, so that the life can thrive. The atmosphere has oxygen, the gas that is used by pretty much every organism to be able to function. With its greenhouse gases, the atmosphere manages to trap the heat inside, thus providing warmth to the Earth. The numerous layers of the atmosphere manage to block in big portion the harmful energy from the Sun, with a special accent on the ozone layer, a layer that manages to stop most of the UV radiation.

5 0
3 years ago
Read 2 more answers
1. Assume this experiment (after the extractions are complete) left you with 4 pure products (aspirin, acetaminophen and caffein
crimeas [40]

Answer:

Explanation:

Out of aspirin, acetaminophen and caffeine, aspirin is an acid because it is acetyl saliciylic acid . Hence it can be tested with litmus paper .

acetaminophen contains phenolic functional group , hence it is a weak acid . It can be tested with any test with which phenol test are done,  like with neutral solution of ferric chloride .

caffeine is weak basic substance . It can also be tested with the help of testing a basic substance .

4 0
2 years ago
Question 1: A blocked-off meander eventually becomes
Setler [38]
Question 1 is A.) an oxbow lake
Question 2 is C.) pebble
7 0
3 years ago
Which of the following gases will have the slowest rate of effusion?
Neko [114]

hydrogen gas...........

6 0
3 years ago
Other questions:
  • Phosphorus atomic radius is smaller than magnesium atomic radius <br> True or false
    9·1 answer
  • When applied to a dish, soap makes grease soluble in water. Which explanation correctly supports the role of intermolecular forc
    6·2 answers
  • The rock record indicates that photosynthesis began on Earth about 3.5 million years ago.
    11·2 answers
  • How does an organism grow and change throughout its life
    12·1 answer
  • A certain liquid X has a normal boiling point of 108.30 °C and a boiling point elevation constant Kb=1.07 °C kg/mol. A solution
    8·1 answer
  • The magnetic quality of ancient rocks is called
    14·2 answers
  • What kind of energy does an unlit match have?​
    14·1 answer
  • When electrons are added to the outermost shell of a carbon atom, it forms
    10·2 answers
  • Which of the following equations is balanced?
    9·1 answer
  • 3. Skunks run about 10 miles per hour and won't try to outrun a predator. Instead, they
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!