Question

Water has a specific heat of 4.184 J/g°C while glass (Pyrex) has a specific heat of 0.780 J/g°C. If 10.0 J of heat is added to 1.00 g of each of these, which will experience the larger increase of temperature? A) glass B) water C) they both will experience the same change in temperature since only the amount of a substance relates to the increase in temperature. D) Not enough information is provided.

Answer 1

Answer:

option (A) Glass

Explanation:

Given:

Specific heat of water = 4.184 J/g°C

Specific heat of glass = 0.780 J/g°C

Amount of heat added, Q = 10 J

Mass of glass = 1.00 g

Mass of water = 1.00 g

Now,

The heat provided:

Q = mcΔT

here,

m is the mass

c is the specific heat

ΔT is the change in the temperature

or rearranging, we get

ΔT = $\frac{\textup{Q}}{\textup{mc}}$

therefore,

the change in temperature is directly proportional heat added and inversely proportional to the mass and the specific heat

here,

except specific heat capacity all the values are equal

therefore,

the substance with lower specific heat will experience the larger increase of   temperature.

Hence, the glass will experience the larger increase of temperature as its specific heat is lower

so the correct answer is option (A) Glass

Answer 2

Answer:

Glass

Explanation:

Specific heat is the amount of heat energy required to increase the temperature of a substance of 1 g by $1^{\circ}$.

The specific heat of water specified is 4.184 $J/g^{\circ}C$

The specific heat of glass as specified is $0.780 J/g^{\circ}C$

After addition of 10 J of heat to each, still glass will have lower value of specific heat.

Glass has lower specific heat and hence required more and will experience greater rise in temperature.