Question

How much PCl5 should be heated to obtain 7.1g Cl2 and 13.75g PCl3 , if law of conservation of mass is true ?

✔✔NEED FULL EXPLANATION ✔✔

❌❌NO COPIED ANSWER❌❌​

Answer 1

pcl5------>pcl3 +cl2

208.5g        137.5g        71g

  moles of pcl3 and cl2 to be produced =0.1

as 7.1/71=0.1

and 13.75/1375=0.1

as co effiecient is 1..therefore 1 mole pcl5 decomposes to 1 mole pcl3 and 1 mole cl2

But here 0.1 mole of cl2 is produced

therfore 0.1 mole of pcl5 is required

0.1 mole pcl5= 208.5x0.1=20.85g

Verification 20.85=7.1+13.75

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Answer 2

Holaaa Mate.

Answer:

✨pcl5------>pcl3 +cl2

208.5g 137.5g 71g

✨ moles of pcl3 and cl2 to be produced =0.1

⏩as 7.1/71=0.1

⏩and 13.75/1375=0.1

✔as co effiecient is 1..therefore 1 mole pcl5 decomposes to 1 mole pcl3 and 1 mole cl2

❇But here 0.1 mole of cl2 is produced

✳therfore 0.1 mole of pcl5 is required

✅0.1 mole pcl5= 208.5x0.1=20.85g

➡Verification 20.85=7.1+13.75