Embibe Experts Solutions for Chapter: Redox Reactions, Exercise 1: Exercise 1

The vapour density of a volatile chloride of divalent metal is $59.5$ and equivalent mass of the metal is

Titration of ${\mathrm{Na}}_3{\mathrm{PO}}_4$ with $\mathrm{HCl}$ to phenolphthalein end point produces ${\mathrm{Na}}_2{\mathrm{HPO}}_4$; subsequent titration to methyl orange end point produces ${\mathrm{NaH}}_2{\mathrm{PO}}_4$. Find the $\mathrm{mg}$ of ${\mathrm{Na}}_2{\mathrm{HPO}}_4$ present in a sample which required $25\mathrm{ml},0.12 \mathrm{NHCl}$ solution to reach the phenolophthalein end point and an additional $35\mathrm{ml}$ of the same acid to reach the methyl orange end point.

The incorrect reaction among the following

Consider the reaction,

${\mathrm{aFeS}}_2+{\mathrm{bO}}_2\to {\mathrm{cFe}}_2{\mathrm{O}}_3+{\mathrm{dSO}}_2$

Which is correct for the above reaction?

The correct statements among the following is/are

With alkali which chlorine oxide disproportionate?

$5.0 \mathrm{g}$ of an alloy of copper was dissolved in one litre of dilute sulphuric acid. In $20 \mathrm{ml}$ of this solution, an excess of potassium iodide was added, and the final solution required $25 \mathrm{ml}$ hypo solution for titration. In $20 \mathrm{ml}$ of potassium dichromate solution (containing $2.4 \mathrm{g}$ of potassium dichromate per litre of solution), sulphuric acid and excess $\mathrm{KI}$ were added. This solution required $30 \mathrm{ml}$ of same hypo solution. Calculate the percentage by weight of copper present in the alloy

How many of the following undergo disproportionation with $\frac{\mathrm{NaOH}}{\Delta }$
a) $Sn$
b) $\mathrm{Pb}$
c) ${\mathrm{Cl}}_2$
d) ${\mathrm{P}}_4$
e) ${\mathrm{Br}}_2$
f) ${\mathrm{F}}_2$
g) $\mathrm{Al}$