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AgNO3
molecular formula of silver nitrate
169.88 g/mol
molecular weight of silver nitrate
appearance
◦Colorless/white crystalline solid becoming black on exposure to light/ organic material
lunar caustic
◦Silver nitrate was once called ? because silver was called luna
halides
◦It is far less sensitive to light than the ?
photography
This compound is a versatile precursor to many other silver compounds, such as those used in this
antiseptic
It is an inorganic chemical with ? activity.
cauterizing/sclerosing agent
agent that stops bleeding by helping form a scab around the wound
◦is also used to help remove warts or skin tags.
argyria
•The main toxic effect of topical silver nitrate is a generalized gray pigmentation of the skin
AgNO3 + skin = DARK GRAY/BLACK STAIN: decomposition of silver ions = elemental silver
very rare even with topical use; 3.8g everyday
chronic systemic use
argyria is more common
fatal gastroenteritis and gastrointestinal bleeding
•If ingested, silver nitrate can cause potentially
procedure
Dissolve 1.75 g of Silver nitrate crystals in water to make 100mL in a volumetric flask.
standardization
◦Transfer 0.10 g of reagent grade Sodium chloride, previously dried at 110 degrees Celsius for 2 hours to an Erlenmeyer flask.
◦Add 1 mL of distilled water to dissolve NaCl, then add the following to the solution: 1 mL Acetic acid, 10 mL of methanol and three drops of Eosin Y TS.
◦Mix and titrate the mixture with the silver nitrate solution.
◦Calculate the normality of your standard solution.
magenta
yellow green to ?
+ acetic acid, methanol, eosin y
acetic acid
added to prevent premature endpoint of Eosin Y
eosin y
indicator
methanol
+ acetic acid = SHARPEST end point
sodium chloride
primary standard/reagent
n = 1
normality
= (weight PS/molar mass/n)(1000/titer mL)
silver nitrate
titer