When $1.0 \mathrm {~kg}$ Of Steam At $100 ^ { \circ } \mathrm { C }$

Multiple Choice

When $1.0 \mathrm {~kg}$ of steam at $100 ^ { \circ } \mathrm { C }$ condenses to water at $100 ^ { \circ } \mathrm { C }$ , what is the change in entropy of the steam? The latent heat of vaporization of water is $22.6 \times 10 ^ { 5 } \mathrm {~J} / \mathrm { kg }$ .

A) $22.6 \times 10 ^ { 5 } \mathrm {~J} / \mathrm { K }$
B) $- 6.1 \times 10 ^ { 3 } \mathrm {~J} / \mathrm { K }$
C) zero
D) $6.1 \times 10 ^ { 3 } \mathrm {~J} / \mathrm { K }$
E) $- 22.6 \times 10 ^ { 5 } \mathrm {~J} / \mathrm { K }$