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
quester [9]
3 years ago
7

A chemical indicator that changes colors depending on the concentration of h+ in the solution is called a

Chemistry
1 answer:
DanielleElmas [232]3 years ago
3 0
Answer is: acid-base indicator or pH indicators.

Acid-base indicators are usually weak acids or bases and they are chemical<span> detectors for hydrogen or hydronium cations.</span>
Example for acid-base indicator is phenolphthalein (molecular formula C₂₀H₁₄O₄). Phenolphthalein is <span>colorless in </span>acidic<span> solutions and pink in </span>basic<span> solutions.
Another example is m</span><span>ethyl orange. It is red colour in acidic solutions and yellow colour in basic solutions.</span>

You might be interested in
Which group period does neon belong to??
Liula [17]
Neon belongs to 2nd Period & 18th Group
8 0
3 years ago
Which is more metallic<br><br> a) Silicon<br><br> b) Aluminum
Alekssandra [29.7K]

Answer:b

Explanation:

4 0
3 years ago
Read 2 more answers
You need to prepare 1 L of the citric acid/citrate buffer. You have chosen to use Method 1 (see lab presentation). Calculate the
prisoha [69]

Answer:

3.11 is the pH of the buffer

Explanation:

The pH of a buffer is obtained using H-H equation:

pH = pKa + log [Conjugate base] / [Weak acid]

<em>Where pH is the pH of the buffer, pKa = -log Ka = 3.14 for the citric buffer and [] could be taken as the moles of each species.</em>

The citric acid,HX (Weak acid), reacts with NaOH to produce sodium citrate, NaX (weak base) and water:

HX + NaOH → H2O + NaX

That means the moles of NaOH added = Moles of sodium citrate produced

And the resulitng moles of HX = Initial moles - Moles NaOH added

<em>Moles HX and NaX:</em>

Moles NaOH = 0.100L * (0.65mol / L) = 0.065 moles NaOH = Moles NaX

Moles HX = 0.300L * (0.45mol / L) = 0.135 moles HX - 0.065 moles NaOH = 0.070 moles HX

Replacing in H-H equation:

pH = 3.14 + log [0.065mol] / [0.070mol]

pH = 3.11 is the pH of the buffer

8 0
3 years ago
Which of the following is an example of a chemical change? *
Norma-Jean [14]

Answer:

hydrogen and oxygen to form water

3 0
3 years ago
This chemical equation represents a chemical reaction.
Strike441 [17]

Explanation:

products are Nacl + H20

5 0
2 years ago
Other questions:
  • During science, Jim's teacher gives this simple rule to use as a first attempt to increase solubility of the solute and the rate
    14·2 answers
  • How do the isotopes of an element differ?
    15·1 answer
  • 2.93 mol of MgF2 to grams
    10·1 answer
  • 24. As the first five elements in Group 14 are considered in order from top to bottom, there are changes
    13·1 answer
  • Demonstrate In A Brief Paragraph How The Search To Explain Planetary Orbits Exemplifies The Scientific Method
    5·1 answer
  • Seawater is typically 3.5% salt and has a density of 1.03 g/mL. How many grams of salt would be needed to prepare enough seawate
    13·1 answer
  • Why is it difficult to undergo nucleophilic substitution in haloarene?​
    13·1 answer
  • A 25.0 mL sample of a saturated C a ( O H ) 2 solution is titrated with 0.029 M H C l , and the equivalence point is reached aft
    5·1 answer
  • Methanol and ethanol are said to be miscible in one another. What does this tell you?
    10·1 answer
  • Need help answering
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!