

Stoichiometry - Engineering
Q1: Pick out the wrong statement.A Heat capacity of a diatomic gas is higher than that of a monoatomic gas.
B Equal volumes of Argon and Krypton contain equal number of atoms.
C Total number of molecules contained in 22.4 litres of hydrogen at NTP is 6.023 x 1023.
D The binary mixture of a particular com-positidn in both vapor and liquid state is known as an azeotropic mixture
ANS:B - Equal volumes of Argon and Krypton contain equal number of atoms. The wrong statement is: "Total number of molecules contained in 22.4 litres of hydrogen at NTP is 6.023 x 10^23." This statement is incorrect because it implies that the number of molecules in 22.4 liters of hydrogen gas at NTP (Normal Temperature and Pressure) is exactly equal to Avogadro's number (6.023×10236.023×1023). However, this would only be true if the gas were an ideal gas and if the volume were measured at standard temperature and pressure (STP), where 1 mole of any ideal gas occupies 22.4 liters. At NTP, 22.4 liters of hydrogen gas contains 1 mole of hydrogen molecules (𝐻2H2), but the number of molecules is twice the Avogadro's number because each molecule of hydrogen (𝐻2H2) contains two hydrogen atoms. Therefore, the correct statement would be that the number of hydrogen molecules in 22.4 liters of hydrogen gas at NTP is 2×6.023×10232×6.023×1023. The other statements are correct:
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