Non-Chemical weighed piece of metal

[goldnugget77]

This is from Hoke book
page 93

STANDARD SOLUTIONS OF GOLD, PLATINUM, AND PALLADIUM
To make a standard solution, dissolve a weighed piece of metal
in a definite quantity of solution. Thus, dissolve two grains of
fine gold in a few drops of aqua regia, wash it into a two-ounce
bottle, and fill the bottle up to the mark with water; label it "Two
Grains Gold in Two Fluid Ounces Water.

what
weighed piece of metal
is she talking about

 

[glorycloud]

I think she is referring to: "two grains of fine gold".

 

[goldsilverpro]

This is from Hoke book
page 93
Quote:
STANDARD SOLUTIONS OF GOLD, PLATINUM, AND PALLADIUM
To make a standard solution, dissolve a weighed piece of metal
in a definite quantity of solution. Thus, dissolve two grains of
fine gold in a few drops of aqua regia, wash it into a two-ounce
bottle, and fill the bottle up to the mark with water; label it "Two
Grains Gold in Two Fluid Ounces Water.



what
weighed piece of metal
is she talking about

The answer.

dissolve two grains of
fine gold in a few drops of aqua regia, wash it into a two-ounce
bottle, and fill the bottle up to the mark with water; label it "Two
Grains Gold in Two Fluid Ounces Water.

Two grains is about .12 grams:


Do it similarly with Pt and Pd or whatever reacts with stannous chloride. You can also make mixtures of, say, Au and Pt, to see the color oddities.