Achiever Test 2 Q 59

[211183]

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What is the molality of 85% phosphoric acid, h3po4, if the density of the soln is 1.7 g/mol.

can someone help me set this up. Not sure I get how to.... or hte reasoning behind the explanation.

 

[jjw822]

What is the molality of 85% phosphoric acid, h3po4, if the density of the soln is 1.7 g/mol.

can someone help me set this up. Not sure I get how to.... or hte reasoning behind the explanation.

What i would do is 85g H2PO4/100g H2o x 1mole / 1.7g x 1000g H20/1L

 

[Mamona]

I think I will set up the equation like this

(85/100)(1.7g/mol/97g)(1000/1)

 

[tawaqul]

anyone have a detailed explanation to this?