Description

CHEMISTRY LAB ACTIVITY BOOK-XII-(WITH FREE PRACTICAL BASED MCQ & PRACTICAL NOTEBOOK)

 CBSE

CONTENTS

SECTION–A-:-SURFACE CHEMISTRY

1.1-:-To prepare a sample of-:-Colloidal solution of starch (or starch solution.)

1.2-:-To prepare a sample of-:-Colloidal solution of egg albumin.

1.3-:-To prepare a sample of-:-Colloidal solution of gum.

1.4-:-To prepare a sample of-:-Ferric hydroxide sol.

1.5-:-To prepare a sample of-:-Aluminium hydroxide sol.

1.6-:–To prepare a sample of-:-Arsenious sulphide sol.

SECTION–B-:-CHEMICAL KINETICS

2.1-:-To study the effect of concentration on the rate of reaction between sodium  thiosulphate and hydrochloric acid.

2.2-:-To study the effect of temperature on the rate of reaction between sodium thiosulphate and hydrochloric acid.

2.3-:-To study the effect of concentration of iodide ions on the rate of reaction between iodide ions and hydrogen peroxide at room temperature using different concentrations of iodide ions.

2.4-:-To study the effect of concentration and temperature on the rate of reaction between potassium iodate and sodium sulphite using starch as indicator (clock reaction).

SECTION–C-:-THERMOCHEMISTRY

3.1-:-To determine enthalpy of dissolution of potassium nitrate (or copper sulphate) in water.

3.2-:-To determine heat of neutralization of hydrochloric acid with sodium hydroxide solution.

3.3-:-To determine enthalpy change during interaction (hydrogen bond formation) between acetone and chloroform.

SECTION–D-:-ELECTROCHEMISTRY

4.1-:-To study the variation of cell potential in Zn/Zn2+||Cu2+/Cu with change in concentration of electrolytes (CuSO4 or ZnSO4) at room temperature.

SECTION–E-:-CHROMATOGRAPHY

5.1-:-To separate the coloured components in the given flower juice by paper chromatography and determine their  Rf values.

5.2-:-To separate the constituents of the given inorganic mixture containing Cu2+ and Cd2+ ions by paper chromatography.

5.3-:-To separate Co2+ and and Ni2+ ions in a given mixture by paper chromatography.

SECTION–F-:-PREPARATION OF INORGANIC COMPOUNDS

6.1-:-To prepare crystals of ferrous ammonium sulphate (Mohr’s salt)

6.2-:-To prepare crystals of Potash alum, K2SO4.Al2(SO4)3.24H2O.

6.3-:-To prepare a sample of potassium ferric oxalate.

AUTHORS

Sukhwinder Kaur (M.Sc. M.Ed)

Sangeeta Goyal (M.Sc.(Hons) M.Phil.Chem,(P.U.Chd)