Conductometric titration

1. Which is working principal of conductometry ?

• a. measurement of potention.

• b.measurement of conductivity of solution.

• c.measurement of emf.

• d. none of the above

If the ionic size is small in solutions

• a.conductance decrease

• b.conductance increase

• c.a and b

• d.none of the above

Cell constant of an electrolytic cell is

• (A) Length * Area

• (B) Length/Area

• (C) Area/length

• (D) None of the above

The reciprocal of resistivity of a conductor is

• potential

• capacitance

• conductivity

• none of these

As temperature increases electrolytic conduction

• increases

• decreases

• remains unaffected

• none of the above

The unit of specific conductance

• ohm

• Siemen

• ohm^-1/cm^-1

• ohm/cm

2. The hydrogen ion has highest condutance due to

• high mobility

• small size

• both a and b

• none of these

The decrease in the conduactance of the solution when NaOH is added to HCl is due to

• decrease in the comncentration

• decrease in the mobilty

• decrease is in the temperature

• none of the above

The last line in the plot of Conductance v/s Volume of NaoH in all the titration is due to

• decrease in the OH^- ions

• increase in the OH^- ions

• decrease in H⁺ ions

• increase in Na⁺ ions

In a mixture of acids always strong acid reacts first with the base. It is due to

• weak acid will remain unionised

• strong acid will remain unionised

• both a and b