Rate of Reaction
19 past-paper questions on Rate of Reaction · examined 2022–2025.
20255 questions
State the name of the piece of apparatus labelled A in Fig. 1.1.
State the name of a piece of apparatus needed which is not shown in Fig. 1.1.
Explain why drawing a new cross on paper in each experiment reduces the accuracy of the results.
Suggest the effect of increasing the concentration of aqueous sodium thiosulfate on the time taken for the cross to become no longer visible.
Suggest one precaution necessary in this investigation to avoid breathing difficulties.
20233 questions
Name apparatus X.
Name apparatus X.
The student has incorrectly positioned the delivery tube in the apparatus shown in Fig. 1.1. Complete Fig. 1.2 to show: • the correct position of the delivery tube • the rest of the apparatus the student uses to collect and measure the volume of gas produced.
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