Tests for negative ions (carbonate,sulfate and halide)- SC25
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片预览 (10 张)
what is the test for carbonate ions? what is a positive result?
add dilute HCL. Bubble ga sthrough limewater and - positive turns cloudy
what is the test for sulphate ions? what is a positive result?
add dilute HCl (removes carbonate ions that may give precipritate) add barium chloride (BaCl2) - white precipritate forms
what is the symbol for carbonate ions?
C03^2-
what is the symbol for sulphate ions?
SO4 ^2-
what are the symbols for hallide ions? (all 3)
Cl-, Br-,I-
What is the test for hallide ions?
few drops of nitric acid (HNO3) which removes carbonate ions, then silver nitrate solution (AgNO3)
what is true about silver fluoride that is not true for other silver halides?
soluble in water
what is the precipritate colour for chloride?
white
what is the precipritate colour for bromide?
cream
what is the precipitate colour for iodide?
yellow