Knowee
Questions
Features
Study Tools

The latent heat of vaporisation of water is 2.26 x 105 J kg-1 22.6 x 105 J kg-1 22.6 x 106 J kg-1 6.22 x 105 J kg-1

Question

The latent heat of vaporisation of water is

  • 2.26 x 10^5 J kg^-1
  • 22.6 x 10^5 J kg^-1
  • 22.6 x 10^6 J kg^-1
  • 6.22 x 10^5 J kg^-1
🧐 Not the exact question you are looking for?Go ask a question

Solution

To address the query regarding the latent heat of vaporization of water, let's follow these steps:

  1. Identify the Question

We need to determine the correct value of the latent heat of vaporization of water from the provided options.

  1. Relevant Concepts

The latent heat of vaporization is the amount of heat required to convert unit mass of a substance from liquid to gas at constant temperature and pressure. For water, this value is commonly accepted as approximately 2.26×106J/kg 2.26 \times 10^6 \, \text{J/kg} .

  1. Analysis of Options

    • Option A: 2.26×105J/kg 2.26 \times 10^5 \, \text{J/kg} - This is incorrect as it is an order of magnitude lower than the accepted value.
    • Option B: 22.6×105J/kg 22.6 \times 10^5 \, \text{J/kg} - This is equivalent to 2.26×106J/kg 2.26 \times 10^6 \, \text{J/kg} , which is the correct value.
    • Option C: 22.6×106J/kg 22.6 \times 10^6 \, \text{J/kg} - This is incorrect; it is an order of magnitude higher than the accepted value.
    • Option D: 6.22×105J/kg 6.22 \times 10^5 \, \text{J/kg} - This is also incorrect and significantly lower than the accepted value.
  2. Verify and Summarize

Comparing the given options with the known value of latent heat of vaporization for water, we conclude that the correct option is B, which represents 2.26×106J/kg 2.26 \times 10^6 \, \text{J/kg} .

Final Answer

The correct value of the latent heat of vaporization of water is 2.26×106J/kg 2.26 \times 10^6 \, \text{J/kg} , corresponding to option B.

This problem has been solved

Similar Questions

The specific heat of water is 1.000 cal/(g·°C). What is the specific heat of water in SI units?

What is the heat needed to heat 150 g of water from 10.0 °C to 100 °C? (specific heat of water = 4,186 J/kg °C)

The specific heat capacity of water is 4.184 J g -1 K -1 . Calculate the amount of heatrequired to raise the temperature of 1.00 g of water by 1.00 K

What is the change in specific enthalpy if water vapor at 80 bar and a quality of 0 is expanded to a saturated vapor at 100 bar?

he specific heat capacity of water is 4.2 kJ/kg°C.Calculate the energy required to increase the temperature of 0.60 kg of water from 31°C to 56°C.

1/3

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.