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Preparation of Boric Acid

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Total cards: 19•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (19)

#1
Front (Question)

Color of Boric acid

Back (Answer)

colorless

#2
Front (Question)

Odor of Boric acid

Back (Answer)

odorless

#3
Front (Question)

taste of Boric acid

Back (Answer)

sour

#4
Front (Question)

Boric acid reaction to litmus paper

Back (Answer)

red to red, blue to red

#5
Front (Question)

Tumeric paper test for boric acid

Back (Answer)

Brownish black

#6
Front (Question)

Boric acid + NH4OH

Back (Answer)

Greenish black

#7
Front (Question)

Methanol-sulfuric acid test of boric acid

Back (Answer)

Green border flame

#8
Front (Question)

Test for impurities for boric acid

Back (Answer)

Clear solution

#9
Front (Question)

Conclusion for test for impurities of boric acid

Back (Answer)

Absence water insoluble subs

#10
Front (Question)

Reagent for Na test for boric acid

Back (Answer)

KH2SbO2

#11
Front (Question)

Reagent for Cl test for boric acid

Back (Answer)

AgNO3

#12
Front (Question)

Results for + KH2SbO2

Back (Answer)

(-)

#13
Front (Question)

Results for + AgNO3

Back (Answer)

(-)

#14
Front (Question)

HCl is used instead of sulfuric acid because:

Back (Answer)

HCl is a soluble acid hence residual traces of HCl will not remain in crystal surfaces while H2SO4 is non-soluble acid and less easily removed

#15
Front (Question)

Test of washings for chloride ions:

Back (Answer)

Addition of AgNO3 (no ppt indicates absence of Clions)

#16
Front (Question)

Cold water is used for washings the crystals since:

Back (Answer)

Because it is less soluble in cold water

#17
Front (Question)

Therapeutic use of boric acid:

Back (Answer)

 Eyewash (collyria)  Bacteriostatic agent  Buffer component

#18
Front (Question)

Official solution before ophthalmic prep:

Back (Answer)

Since the solution might crystallized and will be irritating to the eyes

#19
Front (Question)

Boric acid forms:

Back (Answer)

Crystalline since it will dissolve thoroughly, with powder form- tends to float on top of aqueous solvent