SATHEE: Some Basic Concepts Of Chemistry Question 77

Some Basic Concepts Of Chemistry Question 77

Question: What volume of oxygen gas $(O_{2})$ measured at $0^{\circ} C$ and 1 atm, is needed to burn completely 1L of propane gas $(C_{3} H_{8})$ measured under the same conditions?

Options:

A) 7L

B) 6L

C) 5L

D) 10L

Show Answer

Answer:

Correct Answer: C

Solution:

[c] Writing the equation of combustion of propane $(C_{3} H_{8})$ , we get $\underset{\begin{matrix} 1, v o l \\ 1 L \end{matrix}}{C_{3} H_{8}}, + \underset{\begin{matrix} 5 v o l \\ 5 L \end{matrix}}{5 O_{2}}, \to 3 C O_{2} + 4 H_{2} O$ From the above equation we find that we need 5 L of oxygen at NTP to completely burn 1 L of propane at N.T.P. If we change the conditions for both the gases from N.T.P. to same conditions of temperature and pressure. The same results are obtained, i.e. 5 L is the correct answer.

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Some Basic Concepts Of Chemistry Question 77

Question: What volume of oxygen gas (O2) measured at 0∘C and 1 atm, is needed to burn completely 1L of propane gas (C3H8) measured under the same conditions?

Options:

Answer:

Solution:

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Question: What volume of oxygen gas $(O_{2})$ measured at $0^{\circ} C$ and 1 atm, is needed to burn completely 1L of propane gas $(C_{3} H_{8})$ measured under the same conditions?