What weight of ${\rm{HN}}{{\rm{O}}_3}$ is needed to convert 5 g of iodine into iodic acid according to the reaction, ${{\rm{I}}_2} + {\rm{HN}}{{\rm{O}}_3} o {\rm{HI}}{{\rm{O}}_3} + {\rm{N}}{{\rm{O}}_2} + {{\rm{H}}_2}{\rm{O}}?$ ?

1 gram of sodium hydroxide was reacted with $25 \mathrm{mL}$ of $0.75 \mathrm{M}$ sulfuric acid ($\mathrm{H_2SO_4}$). What mass of sodium hydroxide remains unreacted?

100 mL of 0.1 M solution of a reductant is diluted to 1 litre, which of the following changes?

Which method is employed for concentrating sulfide ores?

A solution is prepared by dissolving 10 g of sucrose ($C_{12}H_{22}O_{11}$) in 200 g of water. What is the mole fraction of sucrose?

In the leaching of alumina from bauxite, the concentration of the ore is achieved by:

Chromite ore is concentrated by:

If 20 g of solute is dissolved in 80 g of solvent, what is the mass percentage of the solute?

What volume of 0.1 $M{\rm{KMn}}{{\rm{O}}_4}$ is needed to oxidise 100 mg of ${\rm{Fe}}{{\rm{C}}_2}{{\rm{O}}_4}$ in acidic solution?

When one mole of ${\rm{KMn}}{{\rm{O}}_4}$ reacts with $HCl$, the volume of chlorine liberated at $NTP$ will be:

When one mole of ${\rm{KMn}}{{\rm{O}}_4}$ reacts with $HCl$, the volume of chlorine liberated at $NTP$ will be: