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Edexcel A-Level Chemistry AS 8.28 Make Predictions About Fluorine and Astatine and Their Compounds in Terms of Knowledge of Trends in Halogen Chemistry Questions

Work backwards from the titre through dilution and reaction ratios, find the anhydrous salt mass and divide the remaining water moles by salt moles.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
AS

Exam points

  • Find hydrated-salt moles from direct titre or acid remaining after back titration.
  • Calculate water moles from the mass difference and determine the integer hydration value.

Edexcel A-Level Chemistry AS 8.28 Make Predictions About Fluorine and Astatine and Their Compounds in Terms of Knowledge of Trends in Halogen Chemistry Questions question 1

[Maximum number: 1]

This question is about the elements in Group 7.

Use your knowledge of the trends in the properties of Group 7 elements to predict the colour and physical state of astatine at room temperature.

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