I can't figure this out. Here's the problem...I swear I'm not just trying to get someone to do my homework!
What volume of H3PO4 forms when 56 mL of POCl3 completely reacts? (POCl density = 1.67 g/mL; H3PO4 density = 1.83 g/mL)
POCl3 + 3 H2O (yeilds) H3PO4 + 3HCl
2006-12-05 02:37:51 · 3 answers · asked by embem171 4 in Science & Mathematics ➔ Chemistry
I just figured it out. 1 mole = 22.4L only works for gases. The acid here is in the liquid state so I have to use density to convert. Oops : )
2006-12-05 02:41:40 · update #1
The conversion 1mol = 22.4 L only applies when you are dealing with an ideal gas.
You have to use d=m/v to convert 56 mL of POCl3 to grams and then to moles.
2006-12-05 02:41:02 · answer #1 · answered by Anonymous · 1⤊ 0⤋
The 1 mole = 22.4 L is only true for gases at STP. Have you corrected to STP? In Kelvins? Also remember that with the densities you have in the problem, neither POCl nor H3PO4 are gases.
2006-12-05 10:43:19 · answer #2 · answered by rb42redsuns 6 · 0⤊ 0⤋
Not only an ideal gas, but an ideal gas at Standard Temperature and Pressure (STP).
2006-12-05 10:42:37 · answer #3 · answered by Radagast97 6 · 0⤊ 0⤋