Question

A In sodium Amalgam solution, the solute is liquid and solvent is solid.
B. The concentration of pollutants in water is often expressed in terms of ug.
C: Commercial bleaching solution contains 3.62 mass percentage of sodium h
From the above statements correct are
(A) Only A
(B) Only B
(C) Only B and C​

Answer 1

Explanation:

Amalgam of mercury with sodium is an example of solid solution in which mercury (liquid ) is solute and sodium (solid ) is a solvent.

Ppm means a mass of chemical contaminant per unit volume of water.

Concentration can also be expressed as mass to volume, mass to mass or volume to volume.

For most of the pollution work, the pollutant concentrations are expressed in volumetric terms, i.e; parts per million. Given

Mass % of NaOCl is 3.62

Solvent is Water

Solution

Mass percentage means mass of solute in 100 g of solution

This means 3.62g of NaOCl is dissolved in 100g of solution

Molality is Moles of solute per kg of solvent

Here solvent is water

Moles will be mass of solute/molecular mass of solute

Molecular mass of NaOCl is 23+16+35.5=74.5g

moles=  3.62/75.5=0.04859

Mass of solvent will be mass of solution -mass of solute

Mass of water=100g-3.62g=96.38g=0.09638

Molality =0.04859/0.09638

=0.504

Answer 2

Answer:

Only B and C

please mark me brainliest