Please help me with this Check if my responses below are correct for the pre lab question on determining ethalpy for neutralization reaction's When using the same graduated cylinder to measure the volumes of HCl(aq) and NaOH(aq) it is important to rinse the cylinder with water and a small amount of the second reactant before measuring the volume of the second reactant because any residue of the first reactant could react with the second reactant, leading to incorrect measurements and potentially affecting the accuracy of the experiment.
Please help me with this
Check if my responses below are correct for the pre lab question on determining ethalpy for neutralization reaction's
- When using the same graduated cylinder to measure the volumes of HCl(aq) and NaOH(aq) it is important to rinse the cylinder with water and a small amount of the second reactant before measuring the volume of the second reactant because any residue of the first reactant could react with the second reactant, leading to incorrect measurements and potentially affecting the accuracy of the experiment.
2. Letting the solutions of HCl(aq) and NaOH(aq) sit overnight allows any excess heat generated during the reaction to dissipate, resulting in a more accurate measurement of the enthalpy change of the reaction. It also allows for any undissolved solids to settle out, ensuring that only the dissolved reactants are used in the experiment.
3. If acid comes in contact with your skin, it is important to flush the area with plenty of cold water rather than neutralizing the acid with a base because the reaction between an acid and a base is exothermic, which means it releases heat. This heat can cause further damage to the skin, and neutralization can potentially create a more harmful substance. Flushing the area with cold water helps to remove the acid from the skin and reduce the temperature, preventing further damage.
4.
Adding a solution of base to a solution of acid should be done slowly and with constant stirring. The acid should be placed in a container first, and then the base should be added slowly while stirring. This helps to control the reaction and prevent the solution from splashing or boiling over. It is also important to wear protective gear such as gloves and goggles.
Diluting a strong acid solution with water should be done by adding the acid to the water slowly, with constant stirring. It is important to add the acid to the water, not the other way around, to avoid splashing or boiling over. It is also important to wear protective gear such as gloves and goggles, as strong acids can be dangerous.
Dissolving a solid base in water should be done slowly, with constant stirring. The base should be added to the water slowly to control the reaction and prevent splashing or boiling over. It is important to wear protective gear such as gloves and goggles, as bases can be dangerous.
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