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4. The Manufacture of Iron
3a. Limestone - chemistry and uses
Quiz 3b More on Carbonate Chemistry
Select answers and click CHECK. © Doc Brown's Chemistry Clinic
acid calcium carbon decompose dioxide exothermic fizzes gas heat hydrochloric hydroxide limewater milky oxide precipitate quicklime
(a) When metal carbonates are strongly heated they
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
to give a solid metal
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
residue and the
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
called
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
.
(b) This gas can be detected by passing it through
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
where it forms a white
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
.
(c) Complete the following word equations ...
(i) calcium carbonate ===>
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
oxide + carbon dioxide
(ii) copper carbonate ===> copper
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
+ carbon dioxide.
(d) Another reaction you need to know is ...
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
+ water ===> slaked lime
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
+ water ==> calcium
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
This is a very
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
reaction because it release lots of
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
energy.
(e) To test a mineral rock to see if is a carbonate, you add
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
.
(f) If the rock '
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
', the gas is collected and bubbled into
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
. to test to see what gas was evolved.
(g) If the limewater turns
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
, it means the gas was carbon dioxide which is always formed when a carbonate reacts with an
acid
calcium
carbon
decompose
dioxide
exothermic
fizzes
gas
heat
hydrochloric
hydroxide
limewater
milky
oxide
precipitate
quicklime
.
CHECK
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4. The Manufacture of Iron
3a. Limestone - chemistry and uses