consider the equation below.\nna⁺ + cl⁻ → nacl\nwhich statement best describes the relationship between the…
consider the equation below.\nna⁺ + cl⁻ → nacl\nwhich statement best describes the relationship between the substances in the equation?\no the number of sodium ions is equal to the number of formula units of salt.\no the number of sodium ions is less than the number of chloride ions.\no the number of chloride ions is less than the number of formula units of salt.\no the number of sodium ions is two times the number of formula units of salt.
Answer
Explanation:
Step1: Analyze the chemical equation
The equation is $\text{Na}^+ + \text{Cl}^- \rightarrow \text{NaCl}$. For every 1 sodium - ion ($\text{Na}^+$) and 1 chloride - ion ($\text{Cl}^-$), 1 formula unit of sodium chloride ($\text{NaCl}$) is formed.
Step2: Evaluate each option
- Option 1: Since 1 $\text{Na}^+$ ion combines with 1 $\text{Cl}^-$ ion to form 1 formula unit of $\text{NaCl}$, the number of sodium ions is equal to the number of formula units of salt. This is correct.
- Option 2: In the reaction, the ratio of $\text{Na}^+$ to $\text{Cl}^-$ is 1:1, so the number of sodium ions is not less than the number of chloride ions. This is incorrect.
- Option 3: 1 $\text{Cl}^-$ ion combines with 1 $\text{Na}^+$ ion to form 1 formula unit of $\text{NaCl}$, so the number of chloride ions is equal to the number of formula units of salt, not less. This is incorrect.
- Option 4: As 1 $\text{Na}^+$ ion forms 1 formula unit of $\text{NaCl}$, the number of sodium ions is not two - times the number of formula units of salt. This is incorrect.
Answer:
The number of sodium ions is equal to the number of formula units of salt.