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An alloy of gold and silver contains 38....

An alloy of gold and silver contains `38.5%` silver by mass and has a density of `14.6 g.mL^(-1)`. What is the molar concentration of silver in this alloy :

A

`52.1 mol.L^(-1)`

B

`45.6 mol.L^(-1)`

C

`3.57 mol.L^(-1)`

D

`2.64 mol.L^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`38.5%((w)/(w))` Ag i.e `38.5 g` Ag contain in `100 g` solution
Molarity
`=("moles of solute")/("Vol.of solution")`
`=(38.5xx146)/(108xx1)=52.1"mol" L^(-1)`
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