3.2 Group 2 Flashcards by layla holmes

Q

Is BaSO4 soluble or insoluble?

A

Insoluble, produces a white ppt

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Q

Is Mg(OH)2 soluble or insoluble

A

Insoluble, produces a white ppt

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Q

Why are group 2 metals reactive

A

-metals lose electrons when they react
-Group 2 loose two electrons and become 2+ ions
-As atomic radius increases it becomes easier to lose outer electrons
-Reactivity increases down group

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Q

What is the use of Mg(OH)2

A

Medicine- Laxatives and antacid

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Q

What is the use of CaO/ CaCO3

A

Purification of flue gases- reduces acid rain

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Q

What is BaSO4 used for

A

Medicine- Insoluble so creates contrast in CT scans and X rays

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Q

Why is acidified BaCl2 used to test for sulfate ions

A

Forms BaSO4 as a white ppt
Acid removes any impurities

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