Question

Steam at 100° C is added to ice at 0° C. Find the amount of ice melted and the final temperature when the mass of steam is 3.00 g and the mass of ice is 50.0 g.

Question 15 options:

a	50.0 g, 43.8° C
b	50.0 g, 38.8° C
c	25.9 g, 0° C
d	24.1 g, 0° C
e	25.0 g, 38.8° C

Answer 1

Temperature of stream, Ts = 100°C A Temperature of Ice Tizo Initial mass of i'll roos mi-509 Latent heat Latent heat Refers to the heat absorbed at or released during the transition of changing from one phase to another phase 17 can be clefined as Qa me Q Where Later heat msmass of substanca L - Latent heat constant Given Latent heat of fersion , Lf2 3335/ Initial mass of stream, ms: 3% Latent head of vapourization = 22605/0

the We start by determing amound of heat needed to convert steam to water, and the heat needed for le to turn to water also- Steam ms Ly =(39) (22605/9) ♡ = 6780 85 Ice Pizmi LA = (50g) (393579) =166505 We just determined that all of the ice will melto 'As energy should conserve, the total amount of heat absorbed by the ice will be equal to the energy released by the Steam. Preleased Pgain Pit Q1 = Q v tQ Qitmicp (Tr-Ti) Qu tms ep (Ts-T() 166505+ (soʻx40186) (T-0): 6780 + 3x4.196 (100-TI) 16650 + 209.3 TL 67 80 + 1255.8 12.558 TF 16650 + 209.3 Tf 8035.8-12.55 ytt TH( 209:37 12.558) = 8614.2 2 = 8035.8-16650

ТЕ .. Вс. 10. 2 2 2 Соч. 3+ 10sT8) = 38, R21 ° Fry - r?

Energy required to melt 50g of ice in is to water Ps.680 16650 J Energy given out by stream to condense to water i Que 6780 J The heat Feleased by the stream as it condenses at 100°c is greater than the energy Raquelreed to melt ice, that PvP lee melt completely Best here cPwy ai Vi & > Qv : so half of the meltiq mizang option ® is corret