Subsection 12.1. Experimental design for Chemistry, O Level - revisedeck

12.1. Experimental design

A subsection of Chemistry, 5070, through 12. Experimental techniques and chemical analysis

Listing 10 of 37 questions

A student wants to show that the rate of the reaction between calcium carbonate and dilute hydrochloric acid doubles for every 10 °C rise in temperature. The method the student uses is to measure the volume of carbon dioxide released. The student has a Bunsen burner and a gas syringe. What other essential apparatus must the student use?

5070_s18_qp_12

MCQ

2018

Paper 1, Variant 2

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An experiment is done to measure the rate of reaction between calcium carbonate and dilute hydrochloric acid. The gas formed is collected in a gas syringe. Which additional pieces of apparatus are essential to measure how the rate of the reaction changes with temperature and the amount of acid used?

5070_s19_qp_11

MCQ

2019

Paper 1, Variant 1

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The diagram shows four pieces of apparatus that are used to measure the volume of a gas or liquid. Which piece of apparatus should always be filled to the same level?

5070_s20_qp_11

MCQ

2020

Paper 1, Variant 1

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The diagram shows four pieces of apparatus that are used to measure the volume of a gas or liquid. Which piece of apparatus should always be filled to the same level?

5070_s20_qp_12

MCQ

2020

Paper 1, Variant 2

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Aqueous sodium thiosulfate reacts with acid to make a precipitate of sulfur. Na2S2O3+ 2HCl → 2NaCl + H2O+ SO2+ SA student investigates the effect of temperature on the rate of this reaction. The student: ● places a piece of paper with a cross on it below the reaction mixture as shown...

5070_s20_qp_12

MCQ

2020

Paper 1, Variant 2

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A student has to measure 28.2 cm3 of aqueous sodium bromide. Which piece of apparatus should the student select?

5070_s21_qp_11

MCQ

2021

Paper 1, Variant 1

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A scientist needs to add approximately 100 cm3 of water to each of 50 large beakers. The scientist needs to fill the beakers as quickly as possible. Which method should be used?

5070_s22_qp_11

MCQ

2022

Paper 1, Variant 1

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The diagram shows four pieces of apparatus that are used to measure the volume of liquid. Which piece of apparatus is always filled to the same level?

5070_s24_qp_11

MCQ

2024

Paper 1, Variant 1

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A student measures the rate at which a fixed mass of magnesium reacts with a fixed volume of dilute hydrochloric acid. dilute hydrochloric acid gas syringe magnesium Which additional pieces of apparatus are required for this experiment?

5070_s24_qp_12

MCQ

2024

Paper 1, Variant 2

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Calcium carbonate reacts with hydrochloric acid, producing carbon dioxide gas. CaCO3+ 2HCl → CaCl 2+ H2O+ CO2The rate of this reaction can be measured using the apparatus shown...

5070_w14_qp_11

MCQ

2014

Paper 1, Variant 1

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Questions Discovered

37