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Mixture of two metals having mass 2 gm (...

Mixture of two metals having mass 2 gm (A = 15, B = 30) and are bivalent and dissolve in HCl and evolve 2.24 L `H_(2)` at STP . What is mass of A present in mixture ?

A

1 gm

B

1.5 gm

C

0.5 gm

D

0.75 gm

Text Solution

Verified by Experts

The correct Answer is:
A
`A+2HCl to Acl_(2)+Hz`
mole `=(x)/(15)" "(x)/(15)`
`B+2HClto BCl_(2)+H2`
mole `=(2-x)/(30)" "(2-x)/(30)`
mole of `H_(2)=(x)/(15)+(2-x)/(30) =(2.24)/(22.4)=1/10`
`(x)/(15)-(x)/(30)=1/10-1/15x=1` gm
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