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
valentinak56 [21]
3 years ago
9

What color would a phenolphthalein solution be at ph=11 ?

Chemistry
2 answers:
saveliy_v [14]3 years ago
8 0

Answer:

Pink

Explanation:

The Ph scale is used to determine if a chemical compound is an acid, a base or neutral. The scale ranges from 0 to 14.

Acids turn litmus red and have a ph range between 0 and 6.9. Bases turn litmus blue and  have a ph range between 8.2 and 14.

Phenolphthalein is ordinarily colorless however, in a basic solution which gives a ph of 11, it is is gives a pink coloration.

Sloan [31]3 years ago
5 0
Colurs of Phenolphthalein at different pH's are as follow,

When pH is less than zero, means when the conditions are strongly acidic then it imparts Orange Color.

At pH ranging from zero to 8.2 (acidic or weakly acidic conditions) it is colorless.

At pH ranging from 8.2 to 12 (Basic conditions) it imparts Pink color.

At pH greater than 13 (strongly basic) it is again Colorless.

Result:
           So, At pH = 11 <span>phenolphthalein solution gives Pink Color.</span>
You might be interested in
Solve the problem for the moles of oxygen.<br> mol O2<br> DONE
Elza [17]

Answer: The answer is 0.245

Explanation: That is what it said the answer was

8 0
3 years ago
A compound is made up of at least
solmaris [256]
Two or more different elements
5 0
3 years ago
- Equilibrium shifts for slightly soluble compounds The reaction for the formation of a saturated solution of silver bromide (Ag
RideAnS [48]

Answer:

1) Favor formation of reactant

2) Favor formation of product

3) Favor formation of product

4) Favor formation of product

5) Favor formation of product

Explanation:

The reaction is AgBr(s)--->Ag^{+}(aq)+Br^{-}(aq)

The reaction is endothermic

1. Adding hydrobromic acid (HBr)

It will increase the amount of bromide ion. Bromide ion is one of the product so it will favor formation of reactant.

2. Lowering the concentration of bromide (Br-) ions

As we are decreasing the the concentration of product it will favor formation of more products

3. Heating the concentrations

If we are heating the mixture, it will increase the temperature and it will favor endothermic reaction. Thus will favor formation of product.

4. Adding solid silver bromide (AgBr)

If we are adding silver bromide it means we are increasing the concentration of reactant, it will favor formation of products

5. Removing silver (Ag+) ions

Removing silver ions means we are decreasing the concentration of product thus it will favor formation of products.

3 0
3 years ago
What does a chemical bond results from a rearrangement of?
Dmitriy789 [7]

Atoms

Explanation:

Chemical bonds results from the rearrangement of atoms in a chemical species.

It deals with the various attractive forces joining chemical species togethe.

  • When atoms are re-arranged, they form chemical bonds that leads to production of new compounds.
  • This is made possible by the exchange or sharing of electrons.
  • The driving force for most interatomic bonding is the tendency to have completely filled outer energy levels like the noble gases.
  • When atoms are re-arranged in compounds they lead to the production of chemical bonds.

learn more:

Ionic bonds brainly.com/question/6071838

#learnwithBrainly

5 0
3 years ago
What is the mass of water necessary to generate 11.2 L of hydrogen gas if calcium metal reacts with water at standard temperatur
12345 [234]

Answer:

The mass of water is 18 g

Explanation:

The reaction of calcium with water can be represented in the equation below:

Ca + 2H₂O --------->Ca(OH)₂ +H₂

1 Mole of gas at STP = 22.4L

From the displacement reaction above, calculate the mass of water that will produce 22.4L of hydrogen gas at STP.

Mass of 2H₂O = 2(2x1 + 16) = 2X18 = 36 g/mol

Using proportional analysis;

36 g of 2H₂O produced 22.4 L of H₂, then

what mass of 2H₂O will produce 11.2L of  H₂ ?

Mathematically,

22.4 L ----------------------------------> 36g

11.2 L -----------------------------------> ?

Cross and multiply, to obtain the expression below

= (11.2 X 36)/22.4

= 18 g

Therefore, the mass of water is 18 g

5 0
3 years ago
Other questions:
  • PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!
    7·1 answer
  • A measure of kinetic energy of particle motion within a substance is_____.
    6·2 answers
  • What is the difference between naoh(s) and naoh(aq)?
    10·2 answers
  • Why is genetic engineering beneficial?
    8·1 answer
  • 1. What is the equation for Boyle's Law?.
    8·2 answers
  • Explain the various factors that impact the solubility of substances in water.
    14·2 answers
  • If the concentration of a sugar solution is lower outside the cell than inside the cell which will happen by osmosis?. A.Sugar w
    7·1 answer
  • What stops gravity from pulling water to the center of the earth
    8·2 answers
  • In this experiment, you need to examine the idea of thermal energy transfer. Using a controlled experiment, what might a good qu
    6·1 answer
  • Which is an advantage of selling plant fertilizer as a powder rather than as a liquid?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!