Question

hydrogen and oxygen gases are mixed. the hydrogen gas exerts a pressure of 175 kpa, and the oxygen gas exerts a pressure of 28 kpa. what is the total pressure exerted by the gases? 119 kpa 4,900 kpa 203 kpa 147 kpa

Explanation:

Step1: Apply Dalton's Law of Partial Pressures

Dalton's Law states that \( P_{total}=P_1 + P_2+\cdots+P_n\). Here, \(P_1 = 175\ \text{kPa}\) (pressure of \(H_2\)) and \(P_2=28\ \text{kPa}\) (pressure of \(O_2\)).

Step2: Calculate the total pressure

\(P_{total}=175 + 28\)
\(P_{total}=203\ \text{kPa}\)

Answer:

203 kPa