Question

In: Chemistry

what is the eventually change during the process in which 100.0g of water at 50.0 degree...

what is the eventually change during the process in which 100.0g of water at 50.0 degree Celsius is cooled to ice at -30degree celcius.the specific heat of ice,liquid water, and steam are 2.03,4.18,1.84 respectively. heat of fusion is 6.01kJ/mol and heat of vapor is 40.67kj/mol

Solutions

Expert Solution

Ti = 50.0

Tf = -30.0

Cl = 4.184 J/g.oC

Heat released to convert liquid from 50.0 oC to 0.0 oC

Q1 = m*Cl*(Ti-Tf)

= 100 g * 4.184 J/g.oC *(50-0) oC

= 20920 J

Lf = 6.01KJ/mol =

6010J/mol

Lets convert mass to mol

Molar mass of H2O = 18.016 g/mol

number of mol

n= mass/molar mass

= 100.0/18.016

= 5.5506 mol

Heat released to convert liquid to solid at 0.0 oC

Q2 = n*Lf

= 5.5506 mol *6010 J/mol

= 33359.2362 J

Cs = 2.03 J/g.oC

Heat released to convert solid from 0.0 oC to -30.0 oC

Q3 = m*Cs*(Ti-Tf)

= 100 g * 2.03 J/g.oC *(0--30) oC

= 6090 J

Total heat released = Q1 + Q2 + Q3

= 20920 J + 33359.2362 J + 6090 J

= 60369 J

= 60.4 KJ

Answer: 60.4 KJ

queen_honey_blossom answered 2 years ago

Next > < Previous

Related Solutions

what is the eventually change during the process in which 100g of water at 50.0degree Celsius...

what is the eventually change during the process in which 100g of water at 50.0degree Celsius is cooled to ice at -30 degree Celsius

A.) Calculate the enthalpy change, ΔH, for the process in which 37.9 g of water is...

A.) Calculate the enthalpy change, ΔH, for the process in which 37.9 g of water is converted from liquid at 4.6 ∘C to vapor at 25.0 ∘C . For water, ΔHvap = 44.0 kJ/mol at 25.0 ∘C and Cs = 4.18 J/(g⋅∘C) for H2O(l). B.)How many grams of ice at -29.4 ∘C can be completely converted to liquid at 20.7 ∘C if the available heat for this process is 5.90×103 kJ ? For ice, use a specific heat of 2.01...

A. Calculate the enthalpy change, ΔH, for the process in which 49.3 g of water is...

A. Calculate the enthalpy change, ΔH, for the process in which 49.3 g of water is converted from liquid at 18.5 ∘C to vapor at 25.0 ∘C . For water, ΔHvap = 44.0 kJ/mol at 25.0 ∘C ands = 4.18 J/(g⋅∘C) for H2O(l) B. How many grams of ice at -6.4 ∘C can be completely converted to liquid at 12.3 ∘C if the available heat for this process is 5.33×103 kJ ? For ice, use a specific heat of 2.01...

Part A Calculate the enthalpy change, ΔH, for the process in which 45.1 g of water...

Part A Calculate the enthalpy change, ΔH, for the process in which 45.1 g of water is converted from liquid at 17.6 ∘C to vapor at 25.0 ∘C . For water, ΔHvap = 44.0 kJ/mol at 25.0 ∘C and Cs = 4.18 J/(g⋅∘C) for H2O(l). Part B How many grams of ice at -16.1 ∘C can be completely converted to liquid at 13.3 ∘C if the available heat for this process is 5.83×103 kJ ? For ice, use a specific heat...

Part A Calculate the enthalpy change, ΔH, for the process in which 24.5 g of water...

Part A Calculate the enthalpy change, ΔH, for the process in which 24.5 g of water is converted from liquid at 5.0 ∘Cto vapor at 25.0 ∘C . For water, ΔHvap = 44.0 kJ/mol at 25.0 ∘C and Cs = 4.18 J/(g⋅∘C) for H2O(l). Express your answer to three significant figures and include the appropriate units. Hints ΔH = J SubmitMy AnswersGive Up Part B How many grams of ice at -9.0 ∘C can be completely converted to liquid at 26.4...

a water purification process in which the water undergoes adsorption and ion exchange processes. what is...

a water purification process in which the water undergoes adsorption and ion exchange processes. what is the expected effect of flow rate on ion concentration after the adsorption and ion exchange units?

initial temperature = 24.3 degree celcuis final temperature = 35.7 degree celcuis 50.0 ml of 0.740...

initial temperature = 24.3 degree celcuis final temperature = 35.7 degree celcuis 50.0 ml of 0.740 M phospheric acid +50.0ml of 2.00M of sodium hydroxide change in temperature = 11.4 degree celcius calculate the following 1- what is the mass mixture in thecup ? 2-heat flowof the system in cup in KJ? 3- heat of system in cup (qrxn)in KJ? 4-initial moles of H3PO4 in the cup? 5- initial moles of NaOH in the cup? 6-delta H rxn in KJ(experimental)?...

1-A solution has a temperature change of 20 K. What is the temperature change in degree...

1-A solution has a temperature change of 20 K. What is the temperature change in degree Celsius? Flag this Question Question 2 Students used two thermometers in Thermo lab. If both thermometers consistently read temperature exactly 1.0 degree higher than the actual temperature, how does this affect the experimental molar heat of neutralization? A-It has an unknown impact on the molar heat of neutrailization. B-This will make the molar heat of neutrailization higher C-Since the temperature differences are used in...

Who are the actors of change and how they act during this coronavirus process?

When 50.0 mL of 60.0°C water was mixed in the calorimeter with 50.0 mL of 25.0°C...

When 50.0 mL of 60.0°C water was mixed in the calorimeter with 50.0 mL of 25.0°C water, the final temperature was measured as 40.8 °C. Assume the density for water is 1.000 g/mL regardless of temperature. a. Determine the magnitude of the heat lost by the hot water. b. determine the magnitude of the heat gained by the room temperature water. c. determine the heat gained by the calorimeter d. determine the calorimeter constant.

Subjects