Question

Heat is supplied to convert 1.26 kg of water at 100°C to steam at 100°C? Latent heat of vaporization of water is
2.26 x 106 J/kg.
a
What is latent heat, and how does it affect the temperature of a substance?
​

Answer 1

Given that,

Mass of water = 1.26 kg

Latent heat of vaporization of water $L=2.26\times10^{6}\ J/kg$

We need to calculate the latent heat

Using formula of latent heat

$Q=mL$

Where, Q = energy

m = mass

L = latent heat of vaporization

Put the value into the formula

$Q=1.26\times2.26\times10^{6}$

$Q=2847600\ J$

$Q=2.84\times10^{6}\ J$

The temperature changes liquid to steam.

So, The temperature will be increases.

Hence, The latent heat is $2.84\times10^{6}\ J$ and temperature increases.

Answer 2

Answer:

latent heat = 2.84 x 10^6

and the temperature increase

Explanation: