Neutralisation Reaction
17 past-paper questions on Neutralisation Reaction · examined 2023–2023.
20238 questions
Hydrochloric acid, HCl, is neutralised when it is added to aqueous potassium hydroxide, KOH. KOH + HCl → KCl + H2O. The reaction is exothermic. P is aqueous potassium hydroxide. Q is 2.24 mol / dm3 hydrochloric acid. Record initial and highest temperatures for Experiments 1-6.
Complete Table 2.1 by filling in the three missing values.
Complete Table 2.1 by filling in the three missing values.
Parts of the thermometer used in Experiment 5 are shown in Fig. 2.1. The liquid levels inside the thermometer are missing. Complete Fig. 2.1 by drawing in the liquid level to show: • the initial temperature of P in Experiment 5 • the highest temperature reached in Experiment 5.
Parts of the thermometer used in Experiment 5 are shown in Fig. 2.1. The liquid levels inside the thermometer are missing. Complete Fig. 2.1 by drawing in the liquid level to show: • the initial temperature of P in Experiment 5 • the highest temperature reached in Experiment 5.
Draw a graph of temperature rise against volume of Q on the grid in Fig. 2.2. You should: • plot the point (0,0) as there is no temperature rise when no Q is added • plot the temperature rises and volumes of Q from Table 2.1 • draw a straight line of best fit for the first four points • draw a straight line of best fit for the last three points • extend the lines so that they intersect.
Draw a graph of temperature rise against volume of Q on the grid in Fig. 2.2. You should: • plot the point (0,0) as there is no temperature rise when no Q is added • plot the temperature rises and volumes of Q from Table 2.1 • draw a straight line of best fit for the first four points • draw a straight line of best fit for the last three points • extend the lines so that they intersect.
The point where the two lines intersect indicates the volume of Q that exactly neutralises 25.0 cm3 of P. Determine the volume of Q where the two lines on the graph intersect.
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