identify the double displacement reaction.\n2nabr + ca(oh)₂ → cabr₂ + 2naoh\n3pb + 2h₃po₄ → 3h₂ +…
identify the double displacement reaction.\n2nabr + ca(oh)₂ → cabr₂ + 2naoh\n3pb + 2h₃po₄ → 3h₂ + pb₃(po₄)₂\n2nh₃ + h₂so₄ → (nh₄)₂so₄\n2no₂ → 2o₂ + n₂
Answer
Explanation:
Step1: Recall double - displacement reaction definition
In a double - displacement reaction, the positive and negative ions of two ionic compounds exchange places.
Step2: Analyze each reaction
- For $2NaBr + Ca(OH)_2\longrightarrow CaBr_2+2NaOH$, $Na^+$ and $Ca^{2 + }$ exchange anions ($Br^-$ and $OH^-$), which is a double - displacement reaction.
- For $3Pb + 2H_3PO_4\longrightarrow3H_2 + Pb_3(PO_4)_2$, it is a single - displacement reaction where lead replaces hydrogen in phosphoric acid.
- For $2NH_3 + H_2SO_4\longrightarrow(NH_4)_2SO_4$, it is a combination reaction where ammonia and sulfuric acid combine to form ammonium sulfate.
- For $2NO_2\longrightarrow2O_2 + N_2$, it is a decomposition reaction where nitrogen dioxide breaks down into oxygen and nitrogen.
Answer:
$2NaBr + Ca(OH)_2\longrightarrow CaBr_2+2NaOH$