In
the acid-base titration of aspirin, neutral ethanol is required to be
used as the solvent. What is the meaning of calling "neutral"?()
A: neutral
to the indicator used
B: pH=7
C: ethanol
to remove acidic impurities
D: It
is neutral to methyl orange
E: relative
to the tested substance
the acid-base titration of aspirin, neutral ethanol is required to be
used as the solvent. What is the meaning of calling "neutral"?()
A: neutral
to the indicator used
B: pH=7
C: ethanol
to remove acidic impurities
D: It
is neutral to methyl orange
E: relative
to the tested substance
举一反三
- What<br/>does “Neutral” mean according to the article?() A: The<br/>business neither supports nor hinders its employees. B: The<br/>type of business. C: Company’s<br/>personnel management. D: Ways<br/>of classifying corporate environments.
- When<br/>the central bank allows the purchase or sale of domestic currency to<br/>have an effect on the monetary base, it is called A: an<br/>unsterilized foreign exchange intervention. B: a<br/>sterilized foreign exchange intervention. C: an<br/>exchange rate feedback rule. D: a<br/>money neutral foreign exchange intervention
- New product pricing strategies contain skimming pricing, penetration pricing and neutral pricing strategies. (<br/>)
- “In my opinion” can not be used to give a neutral opinion. ()
- Which<br/>of the following can be used as the Y-axis of the bar chart? () A: frequency B: relative<br/>frequency C: relative<br/>frequency density D: values<br/>of a variable