Answer:
False
Explanation:
Laboratory synthesis of aspirin is done by the acetylation of salicylic acid with the help of acetic anhydride .
As , the acid anhydride is very sensitive to moisture , as it can hydrolyze into two molecules of acids,
Hence , the reaction involving acid anhydride are conducted in anhydrous solvents .
Hence ,
if water is present in the glassware then , some of the acetic anhydride is wasted , Which in turns reduces the yield than that expected .
Answer:
The water will not interfere with the testing of flammable liquids.
Among BF₃, NF₃, OH⁻ and ALCl₃ both NF₃ and OH⁻ acts as a lewis base.
Explaination:
According to lewis theory of acid and base, base is a specie which has either lone pair of electrons or is negatively charged. So, in the given compounds Nitrogen trifluoride contain lone pair of electron on nitrogen and Hydroxide contains a negative charge on oxygen. And botha are capable to donate these electrons to a lewis acid (electrophiles).
C(C₆H₈O₇) = 0,47 M = 0,47 mol/L.
If we have one liter of solution:
V(solution) = 1 L.
n(solution) = 0,47 mol.
According to molecular formula of compound this can be citric acid.
Citric acid dissociation in water: C₆H₈O₇ → C₆H₅O₇³⁻ + 3H⁺.
There is four ions from one citric acid. Molarity is than c = 4 · 0,47 M = 1,88 M.