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				| 1. | The Gibbs phase rule for a non-reactive system is given by | 
| A. | f = C + (number of phases) + 2 | 
| B. | f = C – (number of phases) – 2 | 
| C. | f = C – (number of phases) + 2 | 
| D. | f = C – (number of phases) – 2 | 
| Answer» D. f = C ‚Äö√Ñ√∂‚àö√ë‚àö¬® (number of phases) ‚Äö√Ñ√∂‚àö√ë‚àö¬® 2 | |