QJEEM22Ph80cb: JEE Main 2022 Physics - Class 11 JEEM22Ph80cb Solution: A vessel contains 16g of hydrogen and 128g of oxygen at…

Question

Verified Solution • 2025–26 Session moderate

A vessel contains 16g of hydrogen and 128g of oxygen at standard temperature and pressure. The volume of the vessel in cm³ is :

Accepted Answer

Total number of moles are

$n = {n_{{H_2}}} + {n_{{O_2}}}$

$= {{16} \over 2} + {{128} \over {32}}$

= 12 moles

Using $PV = nRT$

$V = {{nRT} \over P}$

$= {{12 \times 8.31 \times 273.15} \over {{{10}^5}}}$ m³

= 0.27 m³ = 27 $\times$ 10⁴ cm³

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