Eudiometry

$30 \mathrm{mL}$ of a sample containing ${\mathrm{H}}_2\left(\mathrm{g}\right)$, ${\mathrm{CH}}_4\left(\mathrm{g}\right)$ and $\mathrm{C}\left(\mathrm{g}\right)$ required $35 \mathrm{mL}$ of ${\mathrm{O}}_2$, for complete combustion. There was a contraction of $20 \mathrm{mL}$ when the mixture was treated with $\mathrm{KOH}$ . What is the composition of ${\mathrm{CH}}_4\left(\mathrm{g}\right)$ and ${\mathrm{H}}_2\left(\mathrm{g}\right)$ respectively in original mixture?

5 ml hydrocarbon is mixed with 30 ml O₂. After explosion remaining volume is 25 ml. On adding KOH, volume is decreased to 15 ml. Residual gas is absorbed in alkaline pyrogallol, molecular formula of the compound is

$0.5\mathrm{L}$ of $\mathrm{CO}$, is passed over red-hot coke. The volume becomes $700\mathrm{ml}$. Find the composition of the product if all volumes are measured at NTP.
${\mathrm{CO}}_2\left(\mathrm{g}\right)+\mathrm{C}\left(\mathrm{s}\right)\to 2\mathrm{CO}\left(\mathrm{g}\right)$

For complete combustion of 5 L of an alkane, 25 L of oxygen is required. Which of the following is this alkane, if all volumes are measured at constant temperature and pressure?

$16 \mathrm{mL}$ of a gaseous aliphatic compound ${\mathrm{C}}_{\mathrm{n}}{\mathrm{H}}_{3\mathrm{n}}{\mathrm{O}}_{\mathrm{m}}$ was mixed with $60 {\mathrm{mLO}}_2$ and sparked. The gas mixture on cooling occupied $44 \mathrm{mL}$. After treatment with $\mathrm{KOH}$ solution the volume of gas remaining was $12 \mathrm{mL}$. Deduce the formula of compound

$0.2 \mathrm{mol}$ sample of hydrocarbon ${\mathrm{C}}_{\mathrm{X}}{\mathrm{H}}_{\mathrm{Y}}$ yields, after complete combustion, with excess ${\mathrm{O}}_2$ gas, $0.8 \mathrm{mol} {\mathrm{CO}}_{2 }$ and $0.1 \mathrm{mol} {\mathrm{H}}_2\mathrm{O}$. Hence, hydrocarbon is:

Nine volumes of a gaseous mixture consisting of gaseous organic compound $\mathrm{A}$and just sufficient amount of oxygen required for complete combustion yielded on burning four volumes of ${\mathrm{CO}}_2$ ,six volumes of water vapour, and two volumes of ${\mathrm{N}}_2$ , all volumes measured at the same temperature and pressure. If the compound contains $\mathrm{C}$, $\mathrm{H}$ and$\mathrm{N}$ only the molecular formula of the compound $\mathrm{A}$ is :

Ten millilitres of a gaseous hydrocarbon was burnt completely in $80 \mathrm{mL}$ of ${\mathrm{O}}_2$ at $\mathrm{STP}$. The volume of the remaining gas is $70 \mathrm{mL}$. The volume became $50 \mathrm{mL}$ on treatment with $\mathrm{NaOH}$. The formula of the hydrocarbon is:

Which of the following is compound?

When 10 ml mixture of N₂, CO₂ and CO with mole %, 30 %, 40 % and 30 % respectively is combusted in Eudiometer tube and when resulting mixture is pass through Turpentine oil, contraction of 30 ml is observed and when remaining mixture is pass through KOH solution then contraction of x ml is observed, what is the value of x ?

$25 \mathrm{ml}$ of ${\mathrm{O}}_2$ contracts to $20\mathrm{ }\mathrm{m}\mathrm{l}$ when subjected to silent electric discharge in an ozoniser. What further contraction would be observed if the partially ozonised oxygen is treated with oil of cinnamon (which absorbs ozone)? All volumes are reported at the same temperature and pressure.

Determine the formula of ammonia from the following data : (i) Volume of ammonia = 25 mL (ii) Volume on addition of O₂ after explosion = 71.2 mL. (iii) Volume after explosion and reaction with O₂ on cooling = 14.95 mL. (iv) Volume after being absorbed by alkaline pyrogallol = 12.5 mL.