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
kodGreya [7K]
2 years ago
7

Suppose you had to titrate a solution of NaOH of unknown concentration with a solution of HCl of known concentration using pheno

lphthalein as an indicator. How will you determine the color change
Chemistry
1 answer:
frozen [14]2 years ago
4 0

When the system turns pink, then the end point has been attained.

<h3>What is the end point?</h3>

The end point or the equivalence point is the time when the reactants have undergone transformation in accordance with the reaction equation. The reaction in this case is; HCl + NaOH -----> NaCl + H2O.

We know that phenolphthalein is colorless in acid but red in a base. The color at end point is pink. Thus, when the system turns pink, then the end point has been attained.

Learn more about end point:brainly.com/question/4518249

#SPJ1

You might be interested in
Help ….
VikaD [51]

Answer: 3 and 4 are the answers.

Explanation: i took the quiz.

7 0
3 years ago
An ultraviolet ray of light has a wavelength of 1.5x10^-8 m. What is the ray's<br> frequency?
frutty [35]

Answer:

2 E16 Hz    or     2 * 10^16 Hz

Explanation:

The formula to determine frequency is f = c / λ.

f = frequency

c = speed of light

λ = wavelength

f = 3E8 / 1.5E-8

f = 2E16

This makes sense because UV light exists roughly

between 8E14 Hz and 3E16 Hz ----- 2E16 Hz falls in that range

8 0
4 years ago
What must happen in order for water to change state?
malfutka [58]

Answer:

B

Explanation:

if it releases energy it becomes a solid(Solid)

if it absorbs energy it becomes a gas(Water Vapor)

4 0
3 years ago
A sample of Copper absorbs 43.6 KJ of heat, resulting in a temperature rise of 75.0 oC, determine the mass (in Kg) of the copper
yanalaym [24]

Explanation:

here is the answer to your question

3 0
3 years ago
Question 4
vazorg [7]

Answer:

H(aq) + NO3 (aq) + HF(aq)

Explanation:

In the given mixture of HNO3 (Nitric Acid) and HF (hydrofluoric acid) in water  the major species present are H(aq) + NO3 (aq) + HF(aq).

On the reaction of  HNO3 (Nitric Acid) and HF (hydrofluoric acid) in water  , it will give a polar solution and will form a homogenous mixture.

Hence, the correct answer is "H(aq) + NO3 (aq) + HF(aq)".

4 0
3 years ago
Other questions:
  • Give the product of the reaction of excess benzene (2 equivalents) with dichloromethane and alcl3.
    6·1 answer
  • A car driving east along the freeway at 60 m/s hits some traffic and after 7 seconds is
    9·1 answer
  • Which subatomic particles have a mass of approximately 1 atomic mass unit each?
    11·1 answer
  • In a redox reaction, electrons are transferred from the substance being reduced to the oxidizing agent.
    12·1 answer
  • A compound has an empirical formula of CHBr2. If it’s molar mass is 345.6 grams, what is it’s molecular formula
    13·1 answer
  • 1.    Personality can be determined by genetics or environment<br>​
    11·2 answers
  • A metal atom and a non-metal atom bond together. What type of bond do they form?
    8·1 answer
  • (NH4)3P is it Ionic or Molecular??​
    12·1 answer
  • T or F? Potential energy is limited to electromagnetic, mechanical, and nuclear energy.
    8·2 answers
  • Which of the following statements is true?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!