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
Zigmanuir [339]
3 years ago
13

Which statement is true of phenolphthalein?

Chemistry
2 answers:
Anna007 [38]3 years ago
5 0

The correct option is B.

Phenophtalein is an indicator that is usually used in acid base titration experiments. Indicators are substances that undergo distinct, observable changes when the pH of their solutions change. Indicators exhibit changing of colors depending on the pH of the solution in which they are found. They are usually weak bases and acid which are capable of partial dissociation and formation of ions when dissolved in water. There are different types of indicator and phenophtalein is one of them. Phenophtalein is colorless in acidic solution and pink in basic solutions.

Lesechka [4]3 years ago
3 0
B is the true statement

You might be interested in
Humans have the ability to change characteristics,or traits,of organism over time. What is this process called?
Vladimir79 [104]

Answer:

Natural Selection

7 0
3 years ago
How many moles are in 60.66 g CF2Cl2
mafiozo [28]
There are 0.501 moles in 60.66g of CF2Cl2
7 0
3 years ago
Draw the structure corresponding to the common name α−chloro−β−methylbutyric acid
uysha [10]

Structure of a-chloro-b-methylbutyric acid (2-chloro-3-methylbutyric acid is attached below.


The structure was drawn using following information.


1) First, the parent chain was identified. The parent chain is containing four carbon atoms, also, this chain belongs to carboxylic acid as the compound name ends with Butyric acid i.e. butyr (Butane) -ic acid (carboxylic acid).


2) Secondly, the positions of substituents were assigned by using the rule which sates that the numbering in carboxylic acid must satrt from the carbonyl carbon. Therefore, the carbon which is attached to carbonyl carbon is named as alpha (2nd position) and carbon next to alpha carbon is named as beta carbon (3rd position). Hence, we add chlorine atom on 2nd carbon next to carbonyl group and methyl group at 3rd carbon with respect to carbonyl carbon.

6 0
3 years ago
Read 2 more answers
Which example is a long-term environmental change? La Niña El Niño climate change small asteroid impact
anyanavicka [17]

The correct answer is C. Climate change

Explanation:

Long-term environmental changes occur as major events affect the environment and ecosystems indefinitely. These events differ from short-term environmental changes because the effect of short-term environmental changes is mainly temporary. Also, long-term changes are usually gradual.

Climate change is an example of long-term environmental changes because this implies indefinite and major changes in weather patterns and ecosystems. For example, it is believed climate change will decrease the amount of ice in Earth, change sea level, and lead to the extinction of dozens of species. This does not occur with events such as el niño or a small asteroid impact that affect the environment for a short time and do not imply major changes.

3 0
3 years ago
Consider the equilibrium reaction. 4A+B↽−−⇀3C After multiplying the reaction by a factor of 2, what is the new equilibrium equat
ss7ja [257]
8A+2B——> 6C
since you multiply by a factor of 2 you do that to each letter
4*2=8
1*2=2
3*2=6
5 0
3 years ago
Other questions:
  • An empty 3.00 l bottle weighs 1.70 kg. filled with a certain wine, it weighs 4.72 kg. the wine contains 11.5% ethyl alcohol by m
    13·1 answer
  • Calculate the mass in grams of each sample.
    15·1 answer
  • The value of Δ G ° ' for the conversion of glucose-6-phosphate to fructose-6-phosphate (F6P) is + 1.67 kJ/mol . If the concentra
    5·1 answer
  • Can anybody help me? What is Oxidation? I used google but it didn't give me a good answer...
    6·1 answer
  • What is the first stage of speciation
    9·2 answers
  • An unknown metal has a mass of 86.8 g. When 5040 J of heat are added to the sample, the sample temperature changes by 64.7 ∘ C .
    14·1 answer
  • Precision can be defined as the?
    12·1 answer
  • A tow truck does 10,000 J of work in 5 seconds. Calculate the power.
    15·1 answer
  • Helpppppppppppppppppppppppppppppppppp
    11·2 answers
  • What are the elements names for C9H8O4
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!