nsJudgesRO, nsJudgesRW, nsJudges_talkRO, nsJudges_talkRW
461
edits
Changes
→Double displacement (metathesis) reactions
:2Na (s) + 2H<sub>2</sub>O (l) → 2NaOH (aq) + H<sub>2</sub> (g)
:2Na (s) + 2H<sub>2</sub>O (l) → 2NaOH (aq) + H<sub>2</sub> (g)
===Double displacement (metathesis) reactions===
===Double Displacement (metathesis) reactions===
Atoms or ions exchange partners. There are two kinds of reactions of this type, precipitation and acid-base reactions.
:AX + BY → AY + BX
'''Precipitation'''
:BaBr<sub>2</sub> (aq) + K<sub>2</sub>SO<sub>4</sub> (aq) → 2KBr (aq) + BaSO<sub>4</sub> (s)
'''Acid-Base'''
:Ca(OH)<sub>2</sub> (aq) + 2HCl (aq) → CaCl<sub>2</sub> (aq) + 2H<sub>2</sub>O (l)
[[Category:Chemistry]]
[[Category:Chemistry]]