The type of colloid that is represented by each of the substance has to be given – (a) Rain cloud (b) milk of magnesia (c) soap suds (e) silt in water Concept Introduction: Based on the particle size of the components, solutions can be of three types – true solutions, colloidal solutions and suspension. Colloidal solutions have the particle size of the range 1 - 1 0 0 0 n m . A colloidal solution is made of dispersed phase and dispersion medium which corresponds to solute and solvent respectively. Depending upon the physical state of dispersed phase and dispersion medium, there are various types of colloids such as gel, foam, alloy, sol etc.

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Identifying the major species in weak acid or weak base equilibria The preparations of two aqueous solutions are described in the table below. For each solution, write the chemical formulas of the major species present at equilibrium. You can leave out water itself. Write the chemical formulas of the species that will act as acids in the 'acids' row, the formulas of the species that will act as bases in the 'bases' row, and the formulas of the species that will act as neither acids nor bases in the 'other' row. You will find it useful to keep in mind that NH3 is a weak base. acids: ☐ 1.8 mol of HCl is added to 1.0 L of a 1.0M NH3 bases: ☐ solution. other: ☐ 0.18 mol of HNO3 is added to 1.0 L of a solution that is 1.4M in both NH3 and NH₁Br. acids: bases: ☐ other: ☐ 0,0,... ? 000 18 Ar B 1

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Question

Chapter 12, Problem 12.83QP

Interpretation Introduction

Interpretation:

The type of colloid that is represented by each of the substance has to be given –

(a) Rain cloud (b) milk of magnesia (c) soap suds (e) silt in water

Concept Introduction:

Based on the particle size of the components, solutions can be of three types – true solutions, colloidal solutions and suspension. Colloidal solutions have the particle size of the range 1 - 1000 nm. A colloidal solution is made of dispersed phase and dispersion medium which corresponds to solute and solvent respectively. Depending upon the physical state of dispersed phase and dispersion medium, there are various types of colloids such as gel, foam, alloy, sol etc.

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Identifying the major species in weak acid or weak base equilibria The preparations of two aqueous solutions are described in the table below. For each solution, write the chemical formulas of the major species present at equilibrium. You can leave out water itself. Write the chemical formulas of the species that will act as acids in the 'acids' row, the formulas of the species that will act as bases in the 'bases' row, and the formulas of the species that will act as neither acids nor bases in the 'other' row. You will find it useful to keep in mind that NH3 is a weak base. acids: ☐ 1.8 mol of HCl is added to 1.0 L of a 1.0M NH3 bases: ☐ solution. other: ☐ 0.18 mol of HNO3 is added to 1.0 L of a solution that is 1.4M in both NH3 and NH₁Br. acids: bases: ☐ other: ☐ 0,0,... ? 000 18 Ar B 1

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