A. Ten times dilution of a normal solution (N) reduces its normality to N/10.
B. When equal weights of oxygen and methane are mixed in an empty reactor at room temperature, then the fraction of total pressure exerted by the oxygen is 1/2.
C. Volume occupied by 9.034 x 1023 atoms of oxygen in ozone (O3) at NTP will be 11200 c.c
D. One kg mole of an ideal gas at N.T.P occupies 22400 Nm3.
Correct Answer
One kg mole of an ideal gas at N.T.P occupies 22400 Nm3.
Stoichiometry problems
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1. The maximum adiabatic flame temperature of fuels in air is __________ the maximum flame temperature in pure oxygen.
3. If 1.5 moles of oxygen combines with aluminium to form Al2O3, then the weight of aluminium (atomic weight = 27 ) used in this reaction is __________ gm.
6. The density of a gas at N.T.P.is '?'. Keeping the pressure constant (i.e. 760 mm Hg), the 3 density of the gas will become at a temperature of __________ °K
7. Raoult's law states that 'the equilibrium vapor pressure that is exerted by a component in a solution is proportional to the mole fraction of that component'. This generalisation is based on the assumption that the
Options
A. sizes of the component molecules are approximately equal.
B. attractive forces between like and unlike molecules are approximately equal.
C. component molecules are non-polar and no chemical combination or molecular association between unlike molecules takes place in the formation of the solution.