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Phosphoric acid is found in some soft drinks. A sample of phosphoric acid contains 0.3086 g of
hydrogen, 3.161 g of phosphorus and 6.531 g of oxygen. Find the empirical formula ?⇒

Sagot :

Indrawboyidn

The empirical formula : H₃PO₄

Further explanation  

The empirical formula (EF) is the smallest comparison of atoms of compound forming elements.  

A molecular formula (MF) is a formula that shows the number of atomic elements that make up a compound.  

(empirical formula) n = molecular formula  

(EF)n=MF  

Given

0.3086 g of  hydrogen,

3.161 g of phosphorus

and 6.531 g of oxygen

Required

the empirical formula

Solution

mol H :

= 0.3086 g : 1,00784 g/mol

= 0.3062

mol phosphorus :

= 3.161 g : 30,973762

= 0.102

mol oxygen :

= 6.531 g : 15,999 g/mol

= 0.4082

Divide by 0.102 :

H : P : O = 3 : 1 : 4

The empirical formula : H₃PO₄

Learn more

The molecular formula of the alcohol :C₃H₈O (propanol)

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The molecular formula of Terephthalic acid : C₈H₆O₄

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molar mass  

brainly.ph/question/826345  

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