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Discuss factors that must be considered when using neutralisation reactions to safely minimise damage in chemical spills. - HSC - SSCE Chemistry - Question 24 - 2003 - Paper 1
Question 24
Discuss factors that must be considered when using neutralisation reactions to safely minimise damage in chemical spills.
Worked Solution & Example Answer:Discuss factors that must be considered when using neutralisation reactions to safely minimise damage in chemical spills. - HSC - SSCE Chemistry - Question 24 - 2003 - Paper 1
Step 1
Consider the Reactants
Answer
When addressing chemical spills, it's crucial to identify the nature of the chemicals involved. Understanding whether the spill involves an acid or a base allows for the proper selection of a neutralising agent. For instance, a strong acid could be neutralized using a strong base, and vice versa. The choice of reactants must ensure that the resulting products are safe and stable.
Step 2
Evaluate Environmental Impact
Answer
Another factor to consider is the environmental impact of the neutralization process. It's important to avoid chemical runoff that can cause ecological damage. Using solid neutralizing agents (e.g., sodium hydrogen carbonate) can minimize liquid waste and the potential for harmful runoff into surrounding areas.
Step 3
Safety Precautions
Answer
Implementing safety procedures is vital during neutralisation. This includes wearing appropriate safety goggles and gloves to protect against splashes or fumes. Additionally, ensuring proper ventilation in the area can help mitigate inhalation risks associated with volatile substances.
Step 4
Effectiveness of Neutralisation
Answer
Finally, the effectiveness of the neutralisation reactions should be assessed. This involves confirming that the neutralization has occurred completely and that the pH levels of the resultant mixture are within a safe range. Testing the pH either through litmus paper or pH meters can aid in determining the success of this process.