10th Chemistry: Ch-01 Chemical Reactions and Equations

1. Name the substance ‘X’ and write its formula.
2. Write the reaction of the substance ‘X’ named in (1) above with water.

Perform the following activity.

1. Take four beakers and label them as S,B,C & D.
2. Put 25 mL of water in A, B and C beakers and copper Sulphate solution in beaker D.
3. Measure and record the temperature of each liquid container in the beakers above.
4. Add two spatulas of potassium Sulphate , ammonium nitrate, anhydrous copper Sulphate and fine iron filling to beakers A,B,C & D respectively and stir.
5. Finally measure and record the temperature of each of the mixture above.

Find out which reactions are exothermic and which ones are endothermic in nature.

1. Solution of barium Chloride and sodium Sulphate in water react to give insoluble barium Sulphate and the solution of sodium Chloride.
2. Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium Chloride solution and water.

1. Hydrogen + Chloride ➡️ Hydrogen Chloride
2. Barium Chloride + Aluminium Sulphate ➡️ Barium Sulphate + Aluminium Chloride
3. Sodium + Water ➡️ sodium hydroxide + hydrogen

⚠ Handle the acid with care.

1. Take a few zinc granules (small pieces) in a conical flask or a test tube.
2. Add dilute hydrochloric acid or sulphuric acid to this.
3. Do you observe anything happening around the zinc granules?
4. Touch the conical flask or test tube. Is there any change in its temperature?

1. Take lead nitrate solution in a test tube.
2. Add potassium iodide solution to this.
3. What do you observe?