A sample containing ${CaBr}_{2}$ and $NaI$ in mass ratio $\frac{2}{9}$ was dissolved in water and treated with sufficient amount of aq. ${AgNO}_{3}$ solution to form a mixed precipitate of AgI and AgBr. The weight of mixed precipitate was found to be 1786 gm.
$[Na = 23, Br = 80, I = 127, Ca = 40]$
Select the correct option.

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

Number of moles of AgBr produced is 1

Mass of original sample was 900 gm

Mass of ${CaBr}_{2}$ in the original sample was 400 gm

Moles of ${CaBr}_{2}$ and N aI in the original sample was 1 and 6 respectively

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

In the given reaction we have;

${CaBr}_{2}, NaI$

$Mass = 2 W, 9 W$

$Moles = \frac{2 W}{200}, \frac{9 W}{150}$ $\begin{array}{l} [\frac{2 W}{200} \times 2 \times 188 + \frac{9 W}{150} \times 235 = 1786] \\ \Rightarrow W = 100 \end{array}$

Watch 3-min video & get full concept clarity

tricks from toppers of Infinity Learn

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

🔥 Start Your JEE/NEET Prep at Just ₹1999 / month - Limited Offer! Check Now!

Get Expert Academic Guidance – Connect with a Counselor Today!