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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
States of Matter

NTA Abhyas 2020 · Chemistry · States of Matter

The density of O _ 2 is 16 at NTP. At what temperature(in o C) its...

The density of O2{O}_{2} is 16 at NTP. At what temperature(in oC) its density will be 14? Consider that the pressure remains constant.

Correct answer

39

Step-by-step solution

As d=PMRT\text{d} = \dfrac{\text{P}\text{M}}{\text{R}\text{T}}

d1T1=d2T2{\text{d}}_{1}{\text{T}}_{1} = {\text{d}}_{2}{\text{T}}_{2}

When p\text{p} remains constant

d1=16;d2=14;T1=273K,T2=?{\text{d}}_{1} = 16; {\text{d}}_{2} = 14; {\text{T}}_{1} = 273\text{K}, {\text{T}}_{2} = ?

d1T1=d2T2{\text{d}}_{1}{\text{T}}_{1} = {\text{d}}_{2}{\text{T}}_{2}

16×273=14×T216 \times 273 = 14 \times {\text{T}}_{2}

T2=312K{\text{T}}_{2} = 312\text{K}

T2=312−273=39℃{\text{T}}_{2} = 312 - 273 = 39\text{℃}
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