Synthetic Inorganic Chemistry
GENERAL QUESTIONS X 319
- Name the simplest hydrogen compounds of nitrogen, phos-
phorus, arsenic, and antimony. Compare the stability of these
hydrides when heated. Compare any ability they may possess to
unite with water to form bases, and with acids to form salts.
- Write the equations for the reaction of nitric acid with phos-
phorus, arsenic, antimony, and bismuth, respectively. Describe
the properties of the product in each case.
- How do the trisulphides of arsenic and antimony behave
when treated with a solution of Na^S? With a solution of Na^S-S^?
How does the solution obtained with sodium polysulphide behave
when it is acidified? Give equations for all the reactions.
What is the relation between sulpho- and oxy-acids? Show,
for example, how sodium sulpharsenate is derived from two simple
sulphides, and sodium arsenate from the corresponding oxides.
