CH-1023

Neutralisation

Chemistry · Secondary 4 · Medium · Neutralisation

A student reacts 25.0 cm³ of 1.00 mol/dm³ hydrochloric acid with different volumes of sodium hydroxide solution in a polystyrene cup and measures the highest temperature each time.

At which point is the temperature rise expected to be the greatest?

When the moles of $HCl$ and $NaOH$ added are equal
When the volume of $NaOH$ added is the smallest
When the volume of $NaOH$ added is the largest
When both acid and alkali are in large excess

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