Question

35 ml of oxygen were collected at 6 degree celsius and 758 mm pressure calculate the volume of ntp

Answer 1

Answer:

Volume at ntp is 37.2ml

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Answer 2

The volume of NTP is 36.6 ml

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

Normal condition of temperature (NTP)  is 273 K and atmospheric pressure is 1 atmosphere respectively.

The combined gas equation is,

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1$ = initial pressure of gas = 758 mm Hg

$P_2$ = final pressure of gas (at NTP) = 760 mm Hg

$V_1$ = initial volume of gas = 35 ml

$V_2$ = final volume of gas (at NTP) = ?

$T_1$ = initial temperature of gas =$6^oC=273+6=279K$

$T_2$ = final temperature of gas (at NTP)= 293K

Now put all the given values in the above equation, we get:

$\frac{758\times 35}{279K}=\frac{760\times V_2}{293K}$

$V_2=36.6ml$

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