What is formed in the reaction Kl(aq) + AgNO3(aq) → Agl(s) + KNO3(aq)?
1 answer:
Answer:
A. A precipitate
Explanation:
The reaction is a double displacement reaction in which a precipitate, AgI is produced. In a double displacement reaction, there is an actual exchange of partner ions to form new compounds. This type of reaction is usually known for ionic compounds.
Equation;
KI + AgNO₃
→ AgI
+ KNO₃
From the reaction above, AgI will result in the formation of a yellow precipitate in the solution.
A precipitate is an insoluble compound formed in chemical reaction.
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<u>Answer:</u> The molality of barium chloride solution is 0.289 m
<u>Explanation:</u>
To calculate the mass of water, we use the equation:
Density of water = 1 g/mL
Volume of water = 748 mL
Putting values in above equation, we get:
To calculate the molality of solution, we use the equation:
where,
= Given mass of solute (barium chloride) = 45.0 g
= Molar mass of solute (barium chloride) = 208.23 g/mol
= Mass of solvent (water) = 748 g
Putting values in above equation, we get:
Hence, the molality of barium chloride solution is 0.289 m