Chemical Tests

CHEMICAL TESTS WITH CORRECT
ANSWERS

Test xfor xCarbonate xions x(CO₃²⁻) x- xCORRECT✅✅- xAdd xdilute xacid x→
xEffervescence x(CO₂ xgas xproduced).
- xTest xgas xby xbubbling xthrough xlimewater x→ xTurns xcloudy.

Test xfor xSulfate xions x(SO₄²⁻) x- xCORRECT✅✅- xAdd xdilute xHCl x(to xremove
xcarbonate xions) x
- xThen xadd xBaCl₂ xsolution
- xWhite xprecipitate xof xBaSO₄ xforms.

Test xfor xHydroxide xions x(OH⁻) x- xCORRECT✅✅Use xred xlitmus xpaper x→ xTurns
xblue x(alkaline)


Test xfor xchloride xions x(Cl⁻) x- xCORRECT✅✅- xAdd xdilute xnitric xacid x(to xremove
xcarbonate xions) x
- xThen xadd xsilver xnitrate x(AgNO₃)
- xWhite xppt x(AgCl) x→ xdissolves xin xdilute xNH₃

Test xfor xbromide xions x(Br⁻) x- xCORRECT✅✅- xAdd xdilute xnitric xacid
- xThen xadd xsilver xnitrate x(AgNO₃)
- xCream xppt x(AgBr) x→ xdissolves xin xconcentrated xNH₃

Test xfor xiodide xions x(I⁻) x- xCORRECT✅✅- xAdd xdilute xnitric xacid
- xThen xadd xsilver xnitrate x(AgNO₃)
- xYellow xppt x(AgI) x→ xInsoluble xin xNH₃

Test xfor xAmmonium xions x(NH₄⁺) x- xCORRECT✅✅- xAdd xNaOH xand xwarm x→
xAmmonia xgas xreleased x(NH₃)
- xTest xgas xwith xdamp xred xlitmus x→ xTurns xblue

Test xfor xMagnesium xions x(Mg²⁺) x- xCORRECT✅✅- xAdd xNaOH x→ xWhite xppt x→
xMg(OH)₂
- xAdd xSulfuric xacid x→ xNo xvisible xchange x(MgSO₄ xsolution)

Test xfor xCalcium xions x(Ca²⁺) x- xCORRECT✅✅- xAdd xNaOH x→ xslight xwhite xppt x→
xCa(OH)₂
- xAdd xSulfuric xacid x→ xSlight xwhite xppt x→ xCaSO₄
- xFlame xTest x→ xBrick-red