Tom Buck on wed 15 may 02
Ah me! Jack Rosenberg:
You are right; when I did the comparison (online, quickly) I did
indeed make a math error (a common fault for me). Let's do it again,
calculating the molecular weight:
Ag2CO3 .... 107.87x2+12+48 = 275.74
AgNO3 ....107.87+14+48 = 169.87
now, to compare: either divide Ag2CO3 by 2 or multply AgNO3 x 2, to get
the compounds containing the same amount of silver which will become
Silver Oxide Ag2O in the firing:
let's do x2: Nitrate x 2 = 339.74
so, one mole of Ag2O comes from: 275.74 grams carbonate = 339.74 grams
nitrate
OR 1 g C = 1.23 g N and 0.81 g C = 1 g N
since the amounts of either compound in a glaze are small (1 - 2 g per
kg), then my error would have little consequence. but one might as well do
it right.
Thanks for catching the goof. Peace. Tom B.
Tom Buck ) -- primary address. "alias"
or secondary address.
tel: 905-389-2339 (westend Lake Ontario, province of Ontario, Canada).
mailing address: 373 East 43rd Street, Hamilton ON L8T 3E1 Canada
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