Question

A substance has the following properties: Heat capacities: 1.34 J/g oC (solid) 3.02 J/g oC (liquid)...

A substance has the following properties:

Heat capacities:

1.34 J/g oC (solid)
3.02 J/g oC (liquid)
2.55 J/g oC (gas)


Heat of Fusion = 4.23 kJ/mole
Heat of Vaporization = 23.5 kJ/mole
Melting Point = -30.0 oC
Boiling Point = 88.5 oC
Molar Mass = 69.3 g/mole

How much energy (in kJ) would be needed to heat 555 g of this substance from 1 to 201oC?

Homework Answers

Answer #1

mass of the substance = 555 g

melting point is -30 C

and we have to calculate it from 1 to 201 C so it is present in liquid state .

and its boiling temperature is 88.5 C

so heat absobed at 1 to 88.5 C

molar mass = 69.3

moles = mass/ molecular mass

= 555/69.3= 8.008 mole

now heat required = mass * heat capacity * temperature difference

555 * 3.02 * 77.5 =129897.75 j

now latent heat for converting 88.5 C liquid to 88.5 gas vapourisation energy

heat = 23.5 * 8.008 =188.188 j

now 88.5 to 201 C

temperature difference (201-88.5)=112.5

heat = heat capacity in gas phase * mass * temperature diff.

2.55 * 555 *112.5 =159215.625 j

now total = 159215.625 + 188.188 + 129897.75 =289301.563

IF U SATISFY WITH THE SOLUTION PLEASE LIKE IT .................THNKXXXXXXX

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
How much heat energy is required to convert 21.1 g of solid ethanol at -114.5 °C...
How much heat energy is required to convert 21.1 g of solid ethanol at -114.5 °C to gaseous ethanol at 191.5 °C? The molar heat of fusion of ethanol is 4.60 kJ/mol and its molar heat of vaporization is 38.56 kJ/mol. Ethanol has a normal melting point of -114.5 °C and a normal boiling point of 78.4 °C. The specific heat capacity of liquid ethanol is 2.45 J/g·°C and that of gaseous ethanol is 1.43 J/g·°C. ________kJ
A substance has a melting point of 20°C and a heat of fusion of 2.6×104 J/kg....
A substance has a melting point of 20°C and a heat of fusion of 2.6×104 J/kg. The boiling point is 150°C and the heat of vaporization is 5.2×104 J/kg at a pressure of 1.0 atm. The specific heats for the solid, liquid, and gaseous phases are 600 J/(kg·K), 1000 J/(kg·K), and 400 J/(kg·K), respectively. The quantity of heat required to raise the temperature of 3.0 kg of the substance from 3°C to 118°C, at a pressure of 1.0 atm, is...
ethylene glycol is a colorless liquid at room temperature with the following properties: melting point is...
ethylene glycol is a colorless liquid at room temperature with the following properties: melting point is -12.9°C. boiling point 197.3°C heat of fusion is 159.50 J/g heat of vaporization is 1056.87 J/g heat capacity of the liquid is 2.41 J/g°C heat capacity of the gas 1.25 J/g°C If you had a sample of ethylene glycol at -10°C, what state would it be in (solid, liquid, or gas) if you decreased the temperature from -10°C to -20°C what phase change would...
Question Part Submissions Used Mercury has the following physical properties: normal melting point = -39°C, normal...
Question Part Submissions Used Mercury has the following physical properties: normal melting point = -39°C, normal boiling point = 357°C, heat of fusion = 2.33 kJ/mol, heat of vaporization = 284 J/g, specific heat = 0.139 J/g·°C. Calculate ΔH for the conversion of 171 g of solid mercury at its freezing point to mercury vapor at its boiling point. Note that the heat of vaporization is in atypical units of J/g. To calculate that value, simply multiply so that units...
#21. (a) What is the molar heat capacity of liquid water? 75.2 J/mol oC (this one...
#21. (a) What is the molar heat capacity of liquid water? 75.2 J/mol oC (this one is correct just need help with B and C) (b) What is the heat capacity of 8.58 mol of liquid water? ___kJ (c) How many kJ of heat are needed to raise the temperature of 3.02 kg of water from 35.9 oC to 74.9 oC? ___kJ
Calculate the amount of heat ( in kJ) required to convert 344.0 g of liquid water...
Calculate the amount of heat ( in kJ) required to convert 344.0 g of liquid water at 22.5 oC into steam at 145.0 °C. ( Heat of vaporization of water at its boiling point = 40.7 kJ/mol., specific heats of water and steam are 4.184 J/g °C and 2.01 J/g °C, respectively. )
ethylene glycol is a colorless liquid at room temperature with the following properties melting point is...
ethylene glycol is a colorless liquid at room temperature with the following properties melting point is -12.9°C. boiling point 197.3°C heat of fusion is 159.50 J/g, heat of vaporization is 1056.87 J/g heat capacity of the liquid is 2.41 J/g°C, heat capacity of the gas 1.25 J/g°C a) If you had a sample of ethylene glycol at -10°C, what state would it be in (solid, liquid, or gas) b) if you decreased the temperature from -10°C to -20°C what phase...
1- The normal Boiling Point of liquid benzene is 80.1 oC, with 31.0 kJ/mol of ΔHvap...
1- The normal Boiling Point of liquid benzene is 80.1 oC, with 31.0 kJ/mol of ΔHvap at that temperature. The molar heat capacities of the liquid and the gaseous benzene are given as [Cp(l) = 33.44 + 0.334 T] and [Cp(g) = 10.28 + 0.252 T] respectively. i- Calculate ΔH, ΔS and ΔG when 1 mole of liquid benzene is converted to 1 mole of gaseous benzene at 1.00 atm and 80.1 oC. (10 pts) ii- Calculate the work done...
How much heat energy is required to convert 32.1 g of solid iron at 26 °C...
How much heat energy is required to convert 32.1 g of solid iron at 26 °C to liquid iron at 1538 °C? The molar heat of fusion of iron is 13.8 kJ/mol. Iron has a normal melting point of 1538 °C. The specific heat capacity of solid iron is 0.449 J/g·°C.
1. What term is applied to the following phase change? A(g) → A(s) sublimation freezing fusion...
1. What term is applied to the following phase change? A(g) → A(s) sublimation freezing fusion deposition 2. A hypothetical substance has a melting point of -10°C and a boiling point of 155°C. If this substance heated from 2°C to the gas at 155°C, which of the following would be used in the calculation of necessary heat? A. specific heat capacity of the solid B. heat of fusion C. specific heat capacity of the liquid D. heat of vaporization E....