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the molar volume of gas determined in this lab co the molar volume of gas determ

ID: 1038412 • Letter: T

Question

the molar volume of gas determined in this lab co the molar volume of gas determined in this lab co the molar volume of gas determined in this lab co Molar Volume of a Gas Postlab Questions The molar volume of gas determined in this lab corresponds to ambient conditions - room temperature and pressure. Standard temperature and pressure (STP) is 0 °C and 1 atm. The molar volume of a gas at STP is 22.4 L/mol. Was the molar volume you determined in lab higherlower/the same than STP molar volume? Explain. 1. An alternative to determining the number of moles of hydrogen by a stoichiometry calculation (as we did in this experiment) is to use the ideal gas equation, PV nRT. Here, you can use your experimentally determined values for P, V, and T, along with the known value of R, and solve for n. Calculate the value of n from the ideal gas equation and compare the result to your earlier calculated value of n. Propose an explanation for any discrepancy 2.

Explanation / Answer

The molar volume is higher than that for STP because pressure and volume are directly proportional to Temperature and ambient temperature (that is lab air temperature) is higher that STP temperature of 273.15K (0 degree C).

Comment if any doubt.