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
IrinaK [193]
3 years ago
11

When does phenolphthalein turn pink?

Chemistry
2 answers:
prisoha [69]3 years ago
7 0

Answer:

The correct answer is in the presence of a base.

Explanation:

Phenolphthalein is a pH indicator, which is generally colorless, however, it changes from pink to purple when encounters with the alkaline solutions. The compound phenolphthalein functions in a distinct way as it is colorless naturally, however, it turns from pink to dark pinkish color in alkaline solutions. Throughout the range of acidic pH levels, the compound stays colorless, however, it starts to turn pink at the pH of 8.2, that is, basic, and goes towards the bright purple color in stronger alkalines.

Setler79 [48]3 years ago
3 0
Phenolphthalein turn pink in basic solutions.it turn colourless in acid solution.
Hence options(1)is correct
You might be interested in
5. Which are physical properties of a property of Aluminum metal?
4vir4ik [10]

Answer:

Aluminum is a shiny, silvery white colored metal that is light in weight and strong. Th density of aluminum is 2.7 g/mL, which means the metal will sink in water, but is still relatively light

Hope this helps (:

Mark me brainliest if its good for you :D take care.

8 0
3 years ago
All atoms of the same element have the same:
Korvikt [17]
They have the same number of protons
8 0
3 years ago
Read 2 more answers
A square table has an area of 400 square feet. They want to cut the table into two equal rectangles. If they cut the table in ha
Orlov [11]

Answer:

b=200

l=100

Explanation:

so since it is a square all sides would be equal

when you cut the square vertically the dimensions will change

the bredth would be same that is 200

but the length would be half that is 100

7 0
3 years ago
How many mols are present in the a sample of silver nitrate which has<br> 5.3x10^24 molecules.
Westkost [7]

Answer:  5.3 x 10^24 formula units of silver nitrate is equivalent to 8.8 moles of silver nitrate. Silver nitrate is an ionic compound, therefore, its representative particle is called a "formula unit" instead of molecule. For every mole of a substance, we know that there are 6.022 x 10^23 representative units of that substance. The amount of particles in one mole of substance is called Avogadro's number.

Further Explanation:

We can convert from number of representative particles to moles using the formula:

\boxed {no. \ of \ moles \ = \ ( given \ no. \ of \ particles) \ (\frac{1 \ mole}{\ 6.022 \ x 10^{23} particles})}

For this problem, we can calculate the number of moles by plugging in the given values to the equation above,

no. \ of \ moles \ = (5.3 \ x \ 10^{24} \ formula \ units \ AgNO_{3}) \ (\frac{1 \ mole \ AgNO_{3}}{6.022 \ x 10^{23} \ formula \ units AgNO_{3}}) \\\\\boxed {no. \ of moles \ AgNO_{3} \ = \ 8.8 \ moles}

Learn More

  1. Learn more about representative particles brainly.com/question/8969313
  2. Learn more about Avogadro's number brainly.com/question/229300
  3. Learn more about mole conversions brainly.com/question/1370888

Keywords: moles conversion, Avogadro's number

5 0
3 years ago
A miner develops cancer of the esophagus. Ten years before, he had been exposed to radiation when he worked for a year in a mine
sashaice [31]

D) It is unlikely that a specific cause can be determined, but the treatment would likely be the same in either case

4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the name of the molecular compound SF 5? sulfur pentafluoride sulfur hexafluoride sulfur heptafluoride monosulfur tetraf
    11·1 answer
  • How is geothermal produced
    15·2 answers
  • Carbon monoxide (CO) reacts with hydrogen (H2) to form methane (CH4) and water (H20).
    5·1 answer
  • 45.8 g of NaCl is dissolved in 500. mL of a water (d = 1.00 g/mL) and is placed in the freezer at -1 °C overnight. Which stateme
    14·1 answer
  • Which property indicates how light is reflected from a mineral’s surface?
    5·2 answers
  • Which phrase describes the purpose of today’s wind farms ?
    11·1 answer
  • I need help with these questions in the picture
    7·1 answer
  • Explain and describe how the photoelectric effect occurs on an atomic level in terms of protons, neutrons, and electrons
    9·1 answer
  • 1. What role do you think popular belief has on scientific discoveries?
    9·2 answers
  • Please help its super hard
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!