Making Salt Experiment - Science

 Title: Making Salts

Aim:  To produce sodium chloride salt by carrying out a neutralisation reaction. 

Equipment: 

• 50mL and 200mL beakers
• Dilute HCI (Hydrochloric acid)
• Dilute NaOH (Sodium hydroxide) 
• 25mL Measuring Cylinder
• A Glass Stirring Rod
• Spotting Tile
• Universal Indicator Solution
• Tripod 
• Bunsen Burner
• Evaporating Basin

Method/Steps: 

1. Using the measuring cylinder, measure 10mL of HCI and pour it into the 50mL beaker.

2. Every 10 to 15 drops stop adding the NaOH and use a glass stirring rod to transfers a drop of the solution to a spotting tile. Then, test its pH level using a universal indicator. 

3. Keep adding NaOH and testing the solution by repeating step 2. As you get to the neutral colour of the pH level, you may text the solution after every drop. 

4. Pour the neutral solution into an evaporation basin and evaporate the water out of the solution using the equipment.

Observation: When you pour an indicator and add sodium hydroxide together, it turns purple. When you add hydrochloric acid and indicator together, it makes red. To make a natural pH level of 7, carefully add an equal amount of drop of acid and the sodium hydroxide in the indicator. When it turns to colour green, it needs to be heated up, this then creates a chemical reaction because heat is absorbed. When it evaporates, it makes sodium chloride salt. 

The word equation for this reaction: Hydrochloric Acid + Sodium Hydroxide - Sodium Chloride + Water 

The name of the reaction in step 1: Neutralisation 

What is the name of the process in number 4? Evaporation