Question

Questions and Problems gyam Oriollo Q2 When water is heated, the temperature eventually reaches a constant value and forms a plateau on the graph. What does the plateau indicate?

Answer 1

Ans s2 when water is heated continously then at one point ils temperature slop changing (become constant) . At thes point, boiling of water start taking place. so all heat, instead of raising temperature of water, goes to boiling of water (3) Heat capacity of water = 4.184 3//2.8 = C Mass of water 1159 Change in. To sto Final T - Initial to 35€ - ise.72€ Heat required= m CAT: 1759 4.184 1/87 x 737 = 53451 J = 53451 KIT 1 (4) Dll fusion of ice = 6002 KI /mel Mass of water (ice) = 25 g Molar mass of water = 18 g/mol Moles of water = 25g /clegland = 1:39 mol Heat required DHZ 1-39 ahol x 6.02 Kilombe 18. 37. k3 ] that requere to melt ice. (5) Total heat require Heat require to melt 15g ice + Heat require to change I from ooc to 85c of ing. SAH Atta Moleo of water 159 = 0.83 md 18glmel Allie 6:02 KIsko) x 0.83 phol - 5.01KI Al m CAT - 158 x 4.184 J/gc x .85% = 5.334.67 = 5,33 K1 Total heat require a $4,4 242 = (5.01 +, 5:33) K7 = 110.34 KB