Exercise vi

Aluminium is produced by electrolytic decomposition of . The oxygen released combines of carbon at anode. Assume that  of the oxygen from , and . The daily output is 300 kg of aluminimum
Calculate:

1. The chemical reaction, balanced with minimum whole numbers.
   
   
2. Kg of  consumed
   
   
3. Cubic meter of  and  liberated
   
   

Solution:

Moles of  from  moles of . The reaction is



The value of

Balanced chemical equation with minimum whole number is

566.7kg.

Volume of  and volume of  (expressed at 1 atm. Pressure and 273K).

Exercise Vii Do yourself

A zinc retort is charged with 100Kg. of roasted zinc concentrates carrying 50% zinc, present as . Reduction takes place according to the reaction

 

One- fifth of the  remains unreduced. The zinc vapor and  pass into a condenser, from which the CO escapes and burns to  as it emerges from the mouth of the condenser. The CO enters the condenser at  and 750 mm Hg pressure.

Required:

1.  The volume of  in m3 entering the condenser (a) measured at 273K and 760 mm Hg. (b) measure at actual conditions
2. The weight of , in kilograms
3. The volume of formed, at (, and 770mm Hg. pressure) due to burning of  
4. The volume (Standard conditions) and weight of air used in burning the .

Answer:

i) Moles of  at 273K and 1 atm  at 573 and 750 mm Hg

ii) Weight of

iii) Volume of  on combustion

 

Volume of  (770mmHg and 1023K)

iv) Volume of  (1 atm. Pressure and 273K)

Weight of .