Laboratory Exercises in Chemistry
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of mercuric nitrate (Hg(N03)2) ; red HgO is left ; what is the result of continuing to heat the HgO ? See 6, i. 6. Heat in a test tube i gm. of ferrous oxalate. Notice how the hot FeO when poured out becomes red hot and changes to a rust color. It oxidizes to FegOj. What gases escape } Suppose 52 EXERCISES IN CHEMISTRY.
you collect a test tube full over dilute NaOH, which gas would go into the test tube? Recall also 35 and 36, 3.
(c) From the hydroxid : 7. To solution of CuSO^ add a few drops o...f NaOH solution ; pale blue copper hydroxid, chang- ing to dark CuO on warming. 8. To solution of FejClg add NH4OH to alkaline reaction ; filter and heat some of the precipitate on a fragment of porcelain ; red brown FcjOg is left. Recall 7, 8, 33, 2, 37, 2.
Equations: (i) Mg + 0= . (2) MgO + H20= . (3) Cd + O = . (4) CuCOs = + ■ (5) Complete reaction uncertain; the brown fumes are oxids of Nitrogen. (6) PeCs04=Pe0 4" + (7) CUSO4 + ? NaOH = CuCHa -h . CuOjH, = CuO + (8) Pe^Cle + ? NH4OH = Pe,0„H„ + ?
What to read after Laboratory Exercises in Chemistry?
You can find similar books in the "Read Also" column, or choose other free books by Edwin Julius Bartlett to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
of mercuric nitrate (Hg(N03)2) ; red HgO is left ; what is the result of continuing to heat the HgO ? See 6, i. 6. Heat in a test tube i gm. of ferrous oxalate. Notice how the hot FeO when poured out becomes red hot and changes to a rust color. It oxidizes to FegOj. What gases escape } Suppose 52 EXERCISES IN CHEMISTRY.
you collect a test tube full over dilute NaOH, which gas would go into the test tube? Recall also 35 and 36, 3.
(c) From the hydroxid : 7. To solution of CuSO^ add a few drops o...f NaOH solution ; pale blue copper hydroxid, chang- ing to dark CuO on warming. 8. To solution of FejClg add NH4OH to alkaline reaction ; filter and heat some of the precipitate on a fragment of porcelain ; red brown FcjOg is left. Recall 7, 8, 33, 2, 37, 2.
Equations: (i) Mg + 0= . (2) MgO + H20= . (3) Cd + O = . (4) CuCOs = + ■ (5) Complete reaction uncertain; the brown fumes are oxids of Nitrogen. (6) PeCs04=Pe0 4" + (7) CUSO4 + ? NaOH = CuCHa -h . CuOjH, = CuO + (8) Pe^Cle + ? NH4OH = Pe,0„H„ + ?
What to read after Laboratory Exercises in Chemistry?
You can find similar books in the "Read Also" column, or choose other free books by Edwin Julius Bartlett to read onlineMoreLess
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