Baljinder Kaur Solutions for Chapter: Practice Paper-7, Exercise 7: UNSOLVED PRACTICE PAPERS FOR REVISION

From the equation:${\left({\mathrm{NH}}_4\right)}_2{\mathrm{Cr}}_2{\mathrm{O}}_7\to {\mathrm{Cr}}_2{\mathrm{O}}_3+4{\mathrm{H}}_2\mathrm{O}+{\mathrm{N}}_2$

Calculate the volume of nitrogen at STP evolved when $6.3 \mathrm{g}$ of ammonium dichromate is heated.

From the equation:${\left({\mathrm{NH}}_4\right)}_2{\mathrm{Cr}}_2{\mathrm{O}}_7\to {\mathrm{Cr}}_2{\mathrm{O}}_3+4{\mathrm{H}}_2\mathrm{O}+{\mathrm{N}}_2$

Calculate the mass of chromium (III) oxide, ${\mathrm{Cr}}_2{\mathrm{O}}_3$ formed by the decomposition of $6.3 \mathrm{g}$ of ammonium dichromate at the same time.$\left[\mathrm{N}=14,\mathrm{H}=1,\mathrm{Cr}=52,\mathrm{O}=16\right]$

An organic compound having carbon, hydrogen, nitrogen and oxygen was found to contain $\mathrm{C}=41.37\%,\mathrm{H}=5.75\%,\mathrm{N}=16.09\%$ and the rest of oxygen. Calculate the molecular formula of the liquid if its V.D is $43.5.\left[\mathrm{H}=1,\mathrm{O}=16,\mathrm{C}=12,\mathrm{N}=14\right]$.

The reaction $4{\mathrm{N}}_2\mathrm{O}+{\mathrm{CH}}_4\to {\mathrm{CO}}_2+2{\mathrm{H}}_2\mathrm{O}+4{\mathrm{N}}_2$ takes place in the gaseous state. If all volumes are measured at the same temperature and pressure calculate the volume of dinitrogen oxide required to give $300 {\mathrm{cm}}^3$ of steam.$\left[\mathrm{N}=14,\mathrm{O}=16,\mathrm{C}=12,\mathrm{H}=1\right]$

Name the terms defined as follows:

The amount of energy absorbed or required to remove one or more electrons from the valency shell of an isolated gaseous atom.

Name the terms defined as follows:

The tendency of an atom to attract electrons to itself when combined in a compound.

Name the terms defined as follows:

A hydrocarbon with double and triple bonds.

Name the terms defined as follows:

A salt in which the hydrogen of an acid has been wholly replaced by a metal.