From what acid and what base are the following salts made: KBr, NH4NO3, and BaCl2?
Cation comes from base. Anion comes from acid.
KBr must have come from KOH and HBr.
NH4NO3 must have come from NH3 and HNO3.
See how easy that is? Just write the cation and anion, then add OH to the cation and H to the anion. (NH4NO3 doesn't work quite that way; you must be aware that NH3 + HOH ==> NH4^+ + OH^-.)
BaCl2 must have come from Ba// and //Cl.
To determine the acid and base from which a salt is formed, we need to understand the chemical composition of each salt.
1. KBr (Potassium Bromide):
Potassium bromide (KBr) is formed from the combination of the metal potassium (K) and the non-metal bromine (Br).
2. NH4NO3 (Ammonium Nitrate):
Ammonium nitrate (NH4NO3) is formed from the combination of the ammonium ion (NH4+) and the nitrate ion (NO3-). It does not involve the traditional acid and base combination but instead a reaction between an ammonium ion and a nitrate ion.
3. BaCl2 (Barium Chloride):
Barium chloride (BaCl2) is formed from the combination of the metal barium (Ba) and the non-metal chlorine (Cl).
In summary:
- KBr is formed by the reaction between the metal potassium (K) and the non-metal bromine (Br).
- NH4NO3 is formed by the reaction between the ammonium ion (NH4+) and the nitrate ion (NO3-).
- BaCl2 is formed by the reaction between the metal barium (Ba) and the non-metal chlorine (Cl).
To determine the acids and bases from which the given salts are formed, we need to understand the concept of salt formation. Salts are ionic compounds composed of a positively charged ion (cation) and a negatively charged ion (anion).
Let's break down the salts one by one:
1. KBr (Potassium Bromide):
To determine the acid and base, we need to identify the cation and anion. In this case, the cation is K+ (potassium ion), which comes from the base, potassium hydroxide (KOH). The anion is Br- (bromide ion), which comes from the acid, hydrobromic acid (HBr).
2. NH4NO3 (Ammonium Nitrate):
The cation in this compound is NH4+ (ammonium ion), which comes from the base, ammonia (NH3). The anion is NO3- (nitrate ion), which comes from the acid, nitric acid (HNO3).
3. BaCl2 (Barium Chloride):
The cation in this compound is Ba2+ (barium ion), which comes from the base, barium hydroxide (Ba(OH)2). The anion is Cl- (chloride ion), which comes from the acid, hydrochloric acid (HCl).
By analyzing the composition of each salt, we can identify the acid and base from which they are derived.