Report Sheet

Experiment $6$

Determining the Formula of an Unknown Hydrate

A$.$ Identification of True Hydrates

$\backslash$table$[[$Compound$,\backslash$table$[[$Color of$],[$solution$],[$before$],[$heating$]],\backslash$table$[[$Water$],[$droplets$],[$after$],[$heating$],[($Yes$/$No$)]],\backslash$table$[[$Color a$],[$of the$],[$residue$],[$after$],[$heating$]],\backslash$table$[[$Color of$],[$solution$],[$after adding$],[$water to the$],[$residue$]],\backslash$table$[[$True$],[$hydrate$],[($Yes$/$No$)]]],[$Nickle$($II$)$ chloride,green,yes,well ow$,$ofren,yes$],[$Sucrose$,$white,yes,brown,brown,no$],[$Cobalt$($II$)$ chloride,prple,yes,blue,burgandy,yes$],[$Potassium chloride,white,yes,white,white,no$]]$

B$.$ Determine the Formula of an Unknown Hydrate

empty lid Unknown sample number:

$39\mathrm{.}351$

withoutlid

Molecular formula of the unknown:

$25\mathrm{.}213$

Mass of crucible $+$ unknown hydrate

$24$

Mass of crucible

$1$ gram

Mass of unknown hydrate $(1-2)$

Mass of crucible $+$ anhydrous salt

a$.$ after first heating

b$.$ after second heating

$\frac{26\mathrm{.}014}{26\mathrm{.}0\mathrm{.}14}$

Mass of unknown anhydrous salt $(4b-2)$

$0\mathrm{.}801$

Mass of water lost $(1-4b)$

$0\mathrm{.}199$

$47$