Stoichiometry
1. 30gm of lime stone (calcium carbonate CaCO3)
was heated,
a) Write the equation of
the reaction
b) Calculate the mass of
CO2 produced
c) Calculate the volume
of CO2 at S.T.P.
2. 73.5gm of KClO3 is decomposed on heating
as follows:
2KClO3 2KCl +
3O2
Calculate: a) The mass of KCl formed
b) The volume of O2 formed at S.T.P.
3.54 gram of Dinitrogen pentaoxide (N2 O5)
is decomposed in
heating as
2N2O5 4NO2 + O2
Find the volume of NO2
and O2 produce at S.T.P.
4.
Calculate the
volume of oxygen gas at N.T.P. required to burn 30g of CH4 gas as
shown in the following reaction.
CH4
+ O2 CO2
+ 2H2O
5.
Calculate the
volume of nitrogen gas produce by heating 300g of ammonia gas at 21oC
and 823 torr pressure.
2NH3 N2 + 3H2
6. Calculate the volume of the oxygen at S.T.P. that may
be obtain by the decomposition of 51.3g of KClO3 of heating in
presence of catalyst.
2 KClO3 2KCl + 3O2
7.
Find the mass of
KCIO3, required to prepare 3.2 gm of O2.
2 KCIO3(s) 2KCl(s)
+ 3O2(g)
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