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Phosphorus trichloride contains 22.57 %of phosphorus,phosphine …

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Phosphorus trichloride contains 22.57 %of phosphorus,phosphine contains 91.18%of phosphorus while hydrogen chloride gas contains 97.23%of chlorine.prove by calculation,which law Is illustrated by this data

Posted by Chhaya Vishwakarma 4 years, 4 months ago

CBSE > Class 11 > Chemistry

2 answers

Ankit Mishra 4 years, 4 months ago

Kapde utar ke ch o dun ga

0Thank You

Gaurav Seth 4 years, 4 months ago

From weight percentage given
In PCl₃; 22.57 g of P combines with = 77.43 g of Cl and 1g of P would need = 3.43 g of Cl
and
In PH₃; 91.18 g of P combines with = 8.82 g of H and 1g of P would need = 0.0967 g of H
their ratio is 35.47

Now, if we consider the HCl;
97.23 g of Cl need = 2.77 g of H
Now, if we compare the ratio of Cl:H here = 97.23/2.77 = 35.10

Now both the ratio are nearly equal (35.47:35.10)
Hence, it follows the law of reciprocal proportions

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