Which of the following is best described as an
acid-base reaction?
1. NaCl + AgNO3 !NaNO3 + AgCl
2. Ca + 2H2O ! Ca(OH)2 + H2
3. 2HgO ! 2 Hg + O2
4. KCl + NH4NO3 ! KNO3 + NH4Cl
5. NH3 + H2O ! NH+
4 + OH−
If written correctly, #4 is the one to choose.
NH3 + HOH ==> NH4^+ + OH^-
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thats right, i had it on ut
The acid-base reaction can be best described by option 5: NH3 + H2O ! NH4+ + OH-.
To determine which of the following reactions is best described as an acid-base reaction, we need to understand the characteristics of an acid-base reaction.
An acid-base reaction involves the transfer of protons (H+) from an acid to a base. Acids are substances that donate protons, while bases are substances that accept protons.
Now, let's analyze each of the given reactions:
1. NaCl + AgNO3 → NaNO3 + AgCl: This reaction is a double replacement reaction, where ions switch partners. It does not involve the transfer of protons and therefore is not an acid-base reaction.
2. Ca + 2H2O → Ca(OH)2 + H2: In this reaction, water donates protons (acts as an acid) to Ca, which accepts them (acts as a base). Therefore, this reaction can be described as an acid-base reaction.
3. 2HgO → 2Hg + O2: This reaction is a decomposition reaction, where a compound breaks down into its constituent elements. It does not involve the transfer of protons and is not an acid-base reaction.
4. KCl + NH4NO3 → KNO3 + NH4Cl: This reaction is a double replacement reaction, similar to reaction 1. It does not involve the transfer of protons and therefore is not an acid-base reaction.
5. NH3 + H2O → NH4+ + OH-: In this reaction, NH3 accepts a proton from water, which donates a proton. This indicates a transfer of protons from an acid (water) to a base (NH3). Therefore, this reaction can be described as an acid-base reaction.
In summary, reactions 2 and 5 can be best described as acid-base reactions.