# CHEMISTRY

posted by .

Given that the specific heat capacities of ice and steam are 2.06 J/g°C and 2.03 J/g°C, the molar heats of fusion and vaporization for water are 6.02 kJ/mol and 40.6 kJ/mol, respectively, and the specific heat capacity of water is 4.18 J/g°C, calculate the total quantity of heat evolved when 25.6 g of steam at 194°C is condensed, cooled, and frozen to ice at -50.°C.

• CHEMISTRY -

It's best to work this in stages.
q1 = heat released in moving steam from 194 C to 100 C.
q1 = mass x specific heat steam x (Tfinal-Tinitial)

q2 = heat released to condense steam at 100 C to liquid water at 100 C.
q2 = mass steam x heat vaporixation.

q3 = heat released to move T of liquid water from 100 C to zero C.
q3 = mass x specific heat water x (Tfinal-Tinitial).

q4 = heat released to freeze water at zero C to ice at zero C.
q4 = mass water x heat fusion.

q5 = heat released to move solid ice from zero C to -50 C.
q5 = mass ice x specific heat ice x (Tfinal-Tinitial).

Total q = q1 + q2 + q3 + q4 + q5

## Similar Questions

1. ### Chemistry

A quantity of ice at 0.0 degrees C was added to 33.6 of water at 21.0 degree C to give water at 0.0 degrees C. How much ice was added?
2. ### chemistry

Given that the specific heat capacities of ice and steam are 2.06 J/g°C and 2.03 J/g°C, the molar heats of fusion and vaporization for water are 6.02 kJ/mol and 40.6 kJ/mol, respectively, and the specific heat capacity of water is …
3. ### Chemistry

How much heat is released when 75.0 g of steam at 100.0°C is cooled to ice at -15.0°C?
4. ### Physics

Find the heat necessary to change 2.5kg of water (ice) at -2 degrees C to steam at 105 degrees C. specific heat ice= 2060 specific heat water= 4180 specific heat steam= 2020 heat of fusion= 3.34X10^5 heat of vaporization= 2.26X10^6
5. ### Chemistry

22.) The molar heats of fusion and vaporization for water are 6.02 kJ/mol and 40.6 kJ/mol, respectively, and the specific heat capacity of liquid water is 4.18 J/gC. (1) What quantity of heat is required to melt 25.0 g of ice at 0C?
6. ### Chemistry

Consider the process where 1.3 moles of ice, initially at -30.0 C, is heated to 140.0 C at constant pressure of 1.00 atm. The molar heat capacities (Cp) for solid, liquid, and gaseous water (37.5 J K-1 mol-1, 75.3 J K-1 mol-1, 36.4 …
7. ### Chemistry

Consider the process where 1.3 moles of ice, initially at -30.0 C, is heated to 140.0 C at constant pressure of 1.00 atm. The molar heat capacities (Cp) for solid, liquid, and gaseous water (37.5 J K-1 mol-1, 75.3 J K-1 mol-1, 36.4 …
8. ### chemistry

1. Given that 50 grams of ice is heated at -20.0 °C to steam at 135.0 °C. i. Show the graph of the changes from ice to steam ii. Calculate the energy needed to change the ice to steam Please use these values: Heat of fusion = 334.16 …
9. ### AP Chemistry

Given that the specific heat capacities of ice and steam are 2.06 J/g ·◦C and 2.03 J/g·◦C,respectively, calculate the total quantity of heat necessary to melt 19.2 g of ice at −50.0 ◦C and heat it to steam …
10. ### AP Chemistry

Given that the specific heat capacities of ice and steam are 2.06 J/g · ◦C and 2.03 J/g·◦C, respectively, calculate the total quantity of heat necessary to melt 19.2 g of ice at −50.0◦C and heat it to steam …

More Similar Questions