Neutralisation : The pH Scale

Hi everyone! Welcome to another post, today for science we were given the task to create a post with either one of the experiments that we have previously done. I chose to do a post about the pH scale. 

Aim: To observe how different acids and bases are on the pH scale. 

Equipment: Test Tube, Test Tube Rack, Universal Indicator, Hydrochloric Acid, Sodium Hydroxide, Stirring Rod. 

Method:

    1. Use the universal indicator and pour it into each test tube.

    2. Using Hydrochloric Acid and Sodium Hydroxide pour onto tubes to create the pH spectrum. 

    3. Observe the colour change of the solution. 

Result:

    ⤿ After organizing the test tubes to make them similar to the pH scale, we observed how much acid and 

        the base we have put in the solution.

Discussion:

    ⤿ The process was a fun thing to do because we were just pouring things into the test tube to create different reactions. Strong acid and a strong base were easy to make because you only needed to add a large amount of that particular thing. Something that my partner and I really struggled on was making a more neutral colour something in between pH 7 and pH 14. It was also hard to make something only a little bit acidic because adding too much acid can make it too acidic. Both were hard because we needed to add a mic of different levels of acid and base.

Conclusion:

    ⤻ To summarize the results, we ended up with the pH spectrum arranged in the test tubes. 

a pH of 8 - 12

a pH of 4 - 6 

Full Spectrum of the pH scale.