Question

Equal weights of ethane & hydrogen are mixed in an empty container at 25ŗ C, the fraction of the total pressure exerted by hydrogen is:

• A. 1: 2
• B. 1: 1
• C. 1: 16
• D. 15: 16

Answer 1

Answer: (D)

15: 16

Answer 2

$\frac { \mathrm { p } _ { \mathrm { H } _ { 2 } } } { \mathrm { p } _ { \mathrm { C } _ { 2 } \mathrm { H } _ { 6 } } } = \frac { \mathrm { n } _ { \mathrm { H } _ { 2 } } } { \mathrm { n } _ { \mathrm { C } _ { 2 } \mathrm { H } _ { 6 } } } = \frac { 30 } { 2 } = \frac { 15 } { 1 }$