Question

Phone Word File Edt View Insert Format Tools Table Window Help Module Five Assignment (1) Insert Draw Design Layout Mailings Review View References Home Aa A A A Calbr (o Au te AaBbCcDe AatbCcDdt A A Hedng 7 Hdngt Nemal Pae Properties of Liquids and Solids Instructions: Answer the following questions using the following information: AH 6.02 kl/mol; AH 40.7 kl/mol; specific heat of water is 4.184 Vg C; specific heat of ice is 2.06 s C; specific heat of water vapor is 2.03 /e 'C How much heat is required to vaporize 25 g of water at 100'C? 1. How much heat is required to convert 25 g of ice at-4.0 C to water vapor at 105 C (report your answer to three significant figures)? 2. 3. An ice cube at 0.00 C with a mass of 8.32 g is placed into 55 g of water, initially at 25 C. If no Page 2 o 5 495 wonds Englsh Unted Sta MacBook Air esc $ & 3 4 6 E R T fab un 1

Answer 1

ice at Heat required to convert -4% to ice at oc = mass x sp heat of icex o (o-(-4) a - 25 x 2.06 X 206 ] Sp heat of fusion of ice 1 6020 - 334-379,- Heat required to convert ice at or to water at oc = mass x sp. latent heat of fusion - 25×334 2 83.50 J ers vater Heat required to onvert at o c t o water at 100°c = mass x sp. heat of water x AT

= 25 x 4.18 x (10o-o) - 10450 J. Heat required to convert dates to steams a mass x sp. latent heat of vaporization - 25 x 2260 = 56500 I heat required to convert a steam at 100ě to lose = mass x sp. heat steam XOT 25 2.03 X (105-10) = 254] (254 + 53500 +10450 Total heat required + 8350 + 2062] 2 75760 I = 75.76 kJ