A solution consists of ether and 5.0 g of wa | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) Latent heat of fusion of water $(L_f)$ $= 80 \ cal/g$. Latent heat of vaporization of ether $(L_v)$ $= 90 \ cal/g$. Let the mass of the ether be $

Vedclass · Accepted Answer

$4.5$

Vedclass · Answer

(C) Latent heat of fusion of water $(L_f)$ $= 80 \ cal/g$. Latent heat of vaporization of ether $(L_v)$ $= 90 \ cal/g$. Let the mass of the ether be $m$. To freeze $5 \ g$ of water at $0^{\circ} C$, the heat removed from the water is $Q = m_{water} 	imes L_f = 5 \ g 	imes 80 \ cal/g = 400 \ cal$. This heat is absorbed by the ether as it evaporates: $Q = m 	imes L_v$. Equating the heat: $400 \ cal = m 	imes 90 \ cal/g$. $m = \frac{400}{90} \ g \approx 4.44 \ g$. Rounding to the nearest provided option, the mass is approximately $4.5 \ g$.

$A$ solution consists of ether and $5.0 \ g$ of water at $0^{\circ} C$. If the ether evaporates completely to freeze the water, then the mass of the ether in the solution is (in $g$)

Similar Questions

Boiling water is changing into steam. Under this condition,the specific heat of water is

$A$ block of ice with mass $m$ falls into a lake. After impact,a mass of ice $m/5$ melts. Both the block of ice and the lake have a temperature of $0^{\circ}C$. If $L$ represents the latent heat of fusion,the minimum distance the ice fell before striking the surface is

If water at $0\,^{\circ}C$ kept in a container with an open mouth is placed in a large evacuated chamber,what will happen?

$A$ solid material is supplied with heat at a constant rate. The temperature of the material changes with heat input as shown in the figure. What does the slope of $DE$ represent?

Explain the process of melting of ice with an explanation of freezing,melting,and melting point.

Vedclass Test Series

Exam Paper Generator

Online Exam Module