33. A sodium hydroxide solution was
pipetted into a conical flask and
titrated with hydrochloric acid until
the solution was neutralized. Write a
balance equation for this reaction.
34. 25.0 cm3 of a sodium hydroxide solution
was pipetted into a conical flask and
titrated with 0.200 mol dm-3 (0.2M)
hydrochloric acid. Using a suitable
indicator it was found that 15.0 cm3 of the
acid was required to neutralise the alkali.
Given the reaction below find the
concentration of the alkali.
NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
41. We can use neutralization reactions to
produce substances called salts. Give
any two uses of salts.
42. Name the five metals that can be used to
prepare soluble salts, when mixed with
acid
magnesium
aluminum
zinc
iron
tin
43. What is the test for bromide ion?
Cream precipitate
44. Look at the solubility curve on page 91 in
your notebooks to answer the following
question. What mass of KNO3 will dissolve
in 100mL of water at 40°C
45. Look at the solubility curve on page 91
in your notebooks to answer the
following question. Which is more
soluble at 70°C KCl or HCl?
46. Look at the solubility curve on page 91 in
your notebooks to answer the following
question. At what temperature do NH4Cl
and NH3 have the same solubility?
47. Look at the solubility curve on page 91 in
your notebooks to answer the following
question. How many grams of sodium
nitrate can I dissolve in 200 grams of water
at a temperature of 10˚C?
48. Look at the solubility curve on page 91
in your notebooks to answer the
following question. If 50 grams of a
saturated solution of NH4Cl is cooled
from 70˚C to 30˚C how much salt
would crystallise out of the solution?
49. Sulfuric acid solution was titrated
with potassium hydroxide until the
alkali was neutralized. Write a
balanced equation for this reaction.
50. 20.0 cm3 of 0.0500 mol dm-3 (0.05M)
potassium hydroxide solution was titrated
with 36.0 cm3 of sulfuric acid. Given the
equation below find the concentration of
the acid.
2KOH(aq) + H2SO4(aq) ==> K2SO4 + 2H2O(l)
51. What is the test for aluminum ion?
Clear precipitate
