Question

The correct expression for heat while substance undergo change of state
a) Q = mL
b) Q = msat
c) Q =ms/L
d) Q = ms​

Answer 1

Answer:

option A please follow me

Answer 2

The correct expression for heat while substance undergoes a change of state  is a) Q = mL.

• When a substance changes its state (gas to liquid or liquid to solid etc.), heat is either supplied to the system or is released by it.
• The heat supplied during a change of state does not contribute to increasing the temperature of the system. It stays hidden (latent).
• The heat supplied during the transition from solid-state to liquid and from liquid to gas is called the latent heat of fusion and of vaporization respectively.
• This heat is given by the formula mL. Here, m is the mass of the substance undergoing a change of state and L is its standard enthalpy of vaporization or fusion.