Take 10 mL water in a beaker.n Add a few drops of concentrated H2SO4 to it and swirl thebeaker slowly.n Touch the base of the beaker.n Is there a change in temperature?n Is this an exothermic or endothermic process?n Repeat the above Activity with sodium hydroxide pelletsand record your observations
Question
Take 10 mL water in a beaker.n Add a few drops of concentrated H2SO4 to it and swirl thebeaker slowly.n Touch the base of the beaker.n Is there a change in temperature?n Is this an exothermic or endothermic process?n Repeat the above Activity with sodium hydroxide pelletsand record your observations
Solution
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Start by taking a beaker and adding 10 mL of water to it.
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Next, add a few drops of concentrated H2SO4 (sulfuric acid) to the beaker.
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Swirl the beaker slowly to mix the water and sulfuric acid.
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After mixing, touch the base of the beaker carefully.
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You will notice that the temperature of the beaker has increased. This is because the reaction between water and sulfuric acid is exothermic, meaning it releases heat.
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Now, repeat the same steps with sodium hydroxide pellets instead of sulfuric acid.
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Add the sodium hydroxide pellets to the 10 mL of water in the beaker and swirl slowly.
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Again, touch the base of the beaker.
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You will notice that the temperature of the beaker has increased, similar to the previous activity. This is because the reaction between water and sodium hydroxide is also exothermic.
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Record your observations for both activities.
Remember to always handle chemicals like sulfuric acid and sodium hydroxide with care, as they can be dangerous. Always wear appropriate safety gear, including gloves and eye protection.
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