Answer Question “d”

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Answer Question “d”
The data below are for water (H₂O)
Boiling
Point
Melting
point
Heat of
SH Capacity
(solid)
SH Capacity
(liquid)
Vaporization
SH Capacity
(vapor)
334 J/g
2260 J/g 2.05 J/gºC
4.18 J/g °C
1.90 J/gºC
1. Draw a heating curve for substance water, going from -20°C to 125°C on the axis below.
Write in all formulas used to calculate heat.
125°C
0.0°C
100 °C-
OC
Temp
-20°C-
100.0°C
F
Heat of
Fusion
FNg=m-AHFUS
- to 87°C.
EMSSAT
q=m4Hvap
q=mseAT
G-MSVAT
∙B
ΔΗ =
9-MSAT
LG=heat
m=mass
AT-(T2-T)-Change
Time
b. Determine the amount of heat necessary to convert 15.0g of water at 100.0°C to steam at 100.0°C.
GemHvaporization
Hvaporization=2260/9
-33900)
9
9=159x22601/9
AH 2260/9
c. Determine the amount of heat necessary to convert 15.0g of ice at 0.0°C to liquid at 0.0° C.
9-15gx334
9=159x2260
q=
q=50105
1-334J/g
AH =
S-specific heat
AH vaporization=2260 J/g
ΔΗ =
d. Determine the amount of heat given off when 25g of water cools from 56.2°C to 33.5°C.
9
g-mAlfusion-melting
mAlvaporization boiling
e. Determine the amount of heat needed to raise the temperature of 19.6g of X from -15°C to 2.0°C
Temp
Transcribed Image Text:The data below are for water (H₂O) Boiling Point Melting point Heat of SH Capacity (solid) SH Capacity (liquid) Vaporization SH Capacity (vapor) 334 J/g 2260 J/g 2.05 J/gºC 4.18 J/g °C 1.90 J/gºC 1. Draw a heating curve for substance water, going from -20°C to 125°C on the axis below. Write in all formulas used to calculate heat. 125°C 0.0°C 100 °C- OC Temp -20°C- 100.0°C F Heat of Fusion FNg=m-AHFUS - to 87°C. EMSSAT q=m4Hvap q=mseAT G-MSVAT ∙B ΔΗ = 9-MSAT LG=heat m=mass AT-(T2-T)-Change Time b. Determine the amount of heat necessary to convert 15.0g of water at 100.0°C to steam at 100.0°C. GemHvaporization Hvaporization=2260/9 -33900) 9 9=159x22601/9 AH 2260/9 c. Determine the amount of heat necessary to convert 15.0g of ice at 0.0°C to liquid at 0.0° C. 9-15gx334 9=159x2260 q= q=50105 1-334J/g AH = S-specific heat AH vaporization=2260 J/g ΔΗ = d. Determine the amount of heat given off when 25g of water cools from 56.2°C to 33.5°C. 9 g-mAlfusion-melting mAlvaporization boiling e. Determine the amount of heat needed to raise the temperature of 19.6g of X from -15°C to 2.0°C Temp
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