Question

The mass of AgCl precipitated when a solution containing 11.70 g of NaCl is added to a solution containing 3.4 g of AgNO3 is [Atomic mass of Ag = 108, Atomic mass of Na = 23]

• A. 2.87 g
• B. 6.8 g
• C. 5.74 g
• D. 1.17 g

Answer 1

Answer: (A)

2.87 g

Answer 2

$Nacl+AgNO_{3} \to NaNO_{3}+Agcl$
$58.5+170\to143.5 g$
$\begin{matrix}\left(Limited\,reagent\right)&Nacl&:&AgNO_{3}\\\ Required \, ratio&58.5&:&170\\\ Given \, ratio&11.72&:&3.4 \left(limited\, reagent\right)\end{matrix}$
$170 g AgNO_{3} \to143.5 g Agcl$
$\therefore\, 3.4 g \,AgNO_{3} \to x$
$x=\frac{3.4\times143.5}{170}=2.87 \, g$