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1.1 Formulae, equations and hazards

1.1 Formulae, equations and hazards

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Question 153

A student needs to transfer exactly 25.0 cm3 of a corrosive 0.10 mol dm-3 sodium hydroxide solution into a conical flask to perform a high-precision titration.

Which of the following describes the most appropriate laboratory equipment and safety protocol for this procedure?

A

A 25 cm325\text{ cm}^325 cm3 measuring cylinder filled using a plastic teat pipette

B

A 50 cm350\text{ cm}^350 cm3 beaker with volume graduations, pouring directly from the reagent bottle

C

A 25 cm325\text{ cm}^325 cm3 volumetric pipette fitted with a rubber pipette filler

D

A 50 cm350\text{ cm}^350 cm3 burette with the glass funnel left resting in the top

Markscheme

1.1 Formulae, equations and hazards Questions

  1. GCSE
  2. /Chemistry
  3. /1.1 Formulae, equations and hazards

230 exam-style questions on Edexcel GCSE Chemistry 1.1 Formulae, equations and hazards, covering 1.1.1 Formulae, word and balanced equations, 1.1.2 Balanced ionic equations, and 1.1.3 Hazard symbols and risk in practical work. Each one has a worked solution and a mark scheme showing where the marks go.

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