A-Level ChemistryYear 2019Q20
page 10 20. The volume of hydrogen gas given off against time when an excess of zinc lumps is added to 100 cm3 of 1 mol l-1 hydrochloric acid is shown. time (seconds) volume of hydrogen (litres) Which of the following graphs would show the volume of hydrogen gas given off when an excess of zinc powder was added to 50 cm3 of 1 mol l-1 hydrochloric acid? time (seconds) time (seconds) time (seconds) time (seconds) volume of hydrogen (litres) volume of hydrogen (litres) volume of hydrogen (litres) volume of hydrogen (litres) A B C D
Paper Source:NH_Chemistry_all_2019.pdf
Get full Socratic AI guidance on this question — free in the Applaa desktop app
Appy Buddy guides you step-by-step toward the answer without giving it away. Type your attempt and get instant, mark-scheme-aware clues that teach you to think like an examiner.
Applaa Desktop App
Join Applaa Community
Create your own games, learn AI concepts, program interactive apps, and share with a kid-safe community approved by parents. Free forever on Windows and Mac.
Download Free
Available for Windows and macOS · COPPA Compliant
Exam Specification Info
This question is part of the UK A-Level Chemistry syllabus. In the actual exam, structured questions typically require linking specific keywords to gain full marks. Applaa helps you drill these topics.
Syllabus levelAdvanced Level (A-Level)
SubjectChemistry
Official MarksVariable (2–6 marks)