Andrea is performing an experiment in which she needs to know when a strong acid is present. She is not sure which indicator to use, so she looks up the following table in her science textbook.
Indicator pH range
thymol Blue 1.2 - 2.8
phenol Red 6.4 - 8.0
phenolphthalein 8.0 - 10.0
trinitrobenzoic acid 12.0 - 13.4
According to the textbook, which indicator should Andrea use?
Hint: Neutral substances have a pH of 7. Acids have a pH that is less than 7, and bases have a pH that is greater than 7.
A.
phenolphthalein
B.
phenol Red
C.
thymol Blue
D.
trinitrobenzoic acid
Reset Submit
Answers (1)
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Andrea is performing an experiment in which she needs to know when a strong acid is present. She is not sure which indicator to use, so she ...” in 📘 Chemistry if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers
You Might be Interested in
How does earth's movment affect our view of the stars
Answers (2)
A glucose solution that is prepared for a patient should have a concentration of 180 g/L. A nurse has 18 g of glucose. How many liters of water should she add to the glucose to obtain the required solution?
Answers (1)
Which equation is a decomposition reaction? Li2CO3 - - Li2O + CO2 Zn + HCl - - ZnCl2 + H2 Na2O + CO2 - - Na2CO3 C6H12O6 + O2 - - CO2 + H2O
Answers (1)
A gas occupies 4.65 liters at 0.86 atm. What is the pressure if the volume becomes 15.27 L?
Answers (1)
KNO3 (s) - -->ž K + (aq) + NO3 - (aq) This reaction was carried out in a Styrofoam insulated calorimeter and the following data were recorded:Mass of solid KNO3 dissolved10.1 gMass of aqueous solution (c = 4.18 J/gºC) 100. gT initial30.0ºCT final21.
Answers (1)
New Questions in Chemistry
According to Table F, which compound is soluble in water? (1) barium phosphate (3) silver iodide (2) calcium sulfate (4) sodium perchlorate
Answers (1)
The temperature of a liquid is 75k what is the temperature im celsius
Answers (1)
Balance this equation- Na3PO4 + KOH - > NaOH + K3PO4
Answers (2)
Carbon dioxide, or CO2, is a (n) A.) atom. B.) mixture. C.) element. D.) compound.
Answers (1)
If the atomic number of an element is 6 and its mass number is 20, how many neutrons are in the atom's nucleus?
Answers (1)