50 points! When a sodium thiosulfate solution (Na2S2O3(aq)) is added to hydrochloric acid, sulfur is formed.

1. What would you observe during the reaction? How could you set up the experiment to measure the reaction time for a given combination of thiosulfate and acid solutions?

2. What other products are formed?

3. Apart from heating it, how else could you speed up the reaction? How would this work?

1. Insoluble yellow solid sulfur forms and gets deposited at the bottom. to setup the experiment draw a cross on a white paper and place beaker on top of it. take known volumes of sodium thiosulfate and hydrochloric acid in a beaker and mix it. At the same time start stop watch. measure time taken for the cross to disappear.

2. Sodium chloride, sulfurdioxide and water

3. increase concentration of acid

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).