S C Kheterpal, S N Dhawan and, P N Kapil Solutions for Chapter: Some Basic Concepts of Chemistry, Exercise 16: PROBLEMS FOR PRACTICE

$2.50 \mathrm{g}$ sample of sodium bicarbonate when strongly heated gave $300 {\mathrm{cm}}^3$ of ${\mathrm{CO}}_2$ measured at $27°\mathrm{C}$ and $760 \mathrm{mm}$ pressure. Calculate the percentage purity of the sample.

$10 \mathrm{mL}$ of liquid carbon disulphide (sp. Gravity $2.63$) is burnt in oxygen. Find the volume of the resulting gases measured at S.T.P.

The drain cleaner, Drainex contains small bits of aluminium which react with caustic soda to produce dihydrogen. What volume of dihydrogen at $20°\mathrm{C}$ and one bar will be released when $0.15 \mathrm{g}$ of aluminium reacts?

$5.6$ litres of methane $\left({\mathrm{CH}}_4\right)$ gas are ignited in oxygen gas. Calculate the number of moles of ${\mathrm{CO}}_2$ formed.

Calculate the volume of air containing $21\%$ oxygen by volume at STP required to convert $294 {\mathrm{cm}}^3$ of sulphur dioxide to sulphur trioxide under the same conditions.

What volume of a solution of $\mathrm{HCl}$ containing $73$ g/litre would suffice for the exact neutralization of $\mathrm{NaOH}$ obtained by allowing $0.46 \mathrm{g}$ of metallic sodium to react with water.

Find out the volume of ${\mathrm{Cl}}_2$ at STP produced by the action of $100 {\mathrm{cm}}^3$of $0.2 \mathrm{N} \mathrm{HCl}$ on excess of ${\mathrm{MnO}}_2$.

A mixture of ethane $\left({\mathrm{C}}_2{\mathrm{H}}_6\right)$ and ethene $\left({\mathrm{C}}_2{\mathrm{H}}_4\right)$ occupies $40$ litres at $1.00$ atm and at $400$K. The mixture reacts completely with $130$g of ${\mathrm{O}}_2$ to produce ${\mathrm{CO}}_2$ and ${\mathrm{H}}_2\mathrm{O}$. Assuming ideal gas behavior, calculate the mole fractions of ${\mathrm{C}}_2{\mathrm{H}}_4$and ${\mathrm{C}}_2{\mathrm{H}}_6$ in the mixture.