Question

Mobile charges of the following (if any):

Copper wire, Plastic, Sodium Carbonate, Aluminum Foil, Wood, Glass, Silver Wire, Graphite, Potassium Chloride, Lead, Silicon, Potassium accetate (solid), Potassium accetate (liquid), Dime, Sulfur, Sugar, Penny, Celery, HCI(g) in ligroin, 1.0M Sulfuric Acid, 1.0M ammonia solution, Acetic acid + ammonia miixture, .10M Sulfuric Acid, .10 Barium Hydroxide, Sulfuric acid + barium hydroxide, DI water, Tap Water, Pure Ethonal, Pure Acetic Acid, 95% Ethonal, .10M acetic Acid, .0010HCI, .010M HCI, .10M HCI, 1.0M HCI, Aqueous sodium carbonate, Aqueous calcium carbonate.

Answer 1

Mobile charges of the following:

Copper wire : Electrons ( electrons are loosely held in the valance shell, it mobilises to conduct electricity)

Sodium carbonate = No mobile charges in the solid Sodium carbonate. .

Plastic = No mobile charges

Wood = No mobile charges

Glass = No mobile charges

Silver wire = Same as the copper wire, valance electrons act as a mobile charges

Graphite = Valance electron of carbon is the mobile charge.

Potassium chloride = Same as NaCO3, no mobile charge on solid phase, if it is dissolved in water, K+ and Cl- ions are mobile charges.

Lead = Valence electrons

Silicon = No mobile charge

Potassium acetate(solid) = No mobile charge

Pottasium acetate(liquid) = K+ ion and acetate ion

Sulfur = No mobile charge

Sugar = No mobile charge

1.0 M sulfuric acid = SO42- ions and H+ ions.

1.0 M ammonia solution = Ammonium ion and hydroxyl ion.

Acetic acid + Ammonia = Ammonium ion and acetate ion.

10 M sulfuric acid = SO42- ions and H+ ions.

10 M Barium hydroxide = Ba and oh ion

.0010HCI, .010M HCI, .10M HCI, 1.0M HCI = H+ ion and Cl- ion.

Tap water = All ions in the tap water

DI water = No mobile charge

Pure ethanol = No mobile charge

Pure acetic acid = acetate ion and H+ ion.

Aqueous sodium carbonate = Na+ and CO32- ions.

Aqueous calcium carbonate = Ca2+ and CO32- ions.