Answer to Question #66734 in General Chemistry for Anabell

Question

A mixture of four gases exerts a total pressure of 860mmHg. Gas A and B each exert 220mmHg. Gas C exerts 110mmHg. What pressure is exerted by gas D?

Answer 1

For this task we use the Dalton’s law which says that total pressure of mixture of gases equals to the sum of partial pressures of individual gases:

Ptotal=PA+PB+PC+PD

Therefore
PD = Ptotal – PA – PB – PC.

Do the calculation:
PD = 860 – 220 – 220 – 110 = 310 mmHg.


Answer:
The pressure is exerted by gas D is 310 mmHg