In similar calorimeters, equal volumes of water and alcohol,...

In similar calorimeters, equal volumes of water and alcohol, when poured, take $100 \mathrm{~s}$. and 74 s respectively to cool from $50^{\circ} \mathrm{C}$ to $40^{\circ} \mathrm{C}$. If the thermal capacity of each calorimeter is numerically equal to volume of either liquid, then the specific heat capacity of alcohol is : (Given: the relative density of alcohol as $0.8$ and specific heat capacity of water as $1 \mathrm{cal} / \mathrm{g} /{ }^{\circ} \mathrm{C}$ ) (a) $0.8 \mathrm{cal} / \mathrm{g}^{\circ} \mathrm{C}$ (b) $0.6 \mathrm{cal} / \mathrm{g}^{\circ} \mathrm{C}$ (c) $0.9 \mathrm{cal} / \mathrm{g}^{\circ} \mathrm{C}$ (d) $1 \mathrm{cal} / \mathrm{g}^{\circ} \mathrm{C}$

In similar calorimeters, equal volumes of water and alcohol, when poured, take $100 \mathrm{~s}$. and 74 s respectively to cool from $50^{\circ} \mathrm{C}$ to $40^{\circ} \mathrm{C}$. If the thermal capacity of each calorimeter is numerically equal to volume of either liquid, then the specific heat capacity of alcohol is :
(Given: the relative density of alcohol as $0.8$ and specific heat capacity of water as $1 \mathrm{cal} / \mathrm{g} /{ }^{\circ} \mathrm{C}$ )
(a) $0.8 \mathrm{cal} / \mathrm{g}^{\circ} \mathrm{C}$
(b) $0.6 \mathrm{cal} / \mathrm{g}^{\circ} \mathrm{C}$
(c) $0.9 \mathrm{cal} / \mathrm{g}^{\circ} \mathrm{C}$
(d) $1 \mathrm{cal} / \mathrm{g}^{\circ} \mathrm{C}$

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Relative Density

Relative density is the ratio of the density of a substance to a reference substance (typically water). It is used to compare how heavy or light a substance is in a given volume, and is essential when converting volume-based measurements to mass-based measurements, particularly in thermal calculations.

Calorimetry

Calorimetry is the study of measuring the changes in heat energy during physical or chemical processes. It involves using devices known as calorimeters to precisely determine how much heat is absorbed or released by a system, which is fundamental in understanding energy transfer and thermal properties of substances.

Specific Heat Capacity

Specific heat capacity is the amount of heat energy required to raise the temperature of one unit mass of a substance by one degree Celsius. It provides insight into how well different materials store heat and is a critical property when comparing the thermal responses of various substances.

Thermal Capacity

Thermal capacity, sometimes known as heat capacity, is the total amount of heat required to raise the temperature of an entire object or system by one degree Celsius. In experiments, it is important to account for both the substance involved and the calorimeter itself, as each contributes to the overall thermal behavior.

Transcript

Please give Ace some feedback