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A open ended mercury manometer is used ...

A open ended mercury manometer is used to measure the pressure exerted by a trapped gas as shown in the figure. Initially manometer shows no difference in mercury level in both columns as shown in diagram.

After sparking 'A' dissociates according to following reaction
`A(g)rarrB(g)+3C(g)`
If pressure of Gas "A" dissociates to 0.9 atm, then (Assume temperature to be constant and is 300 K)

A

total pressure increases to 1.3 atm

B

total pressure increases by 0.3 atm

C

total pressure increases by 22.3 cm of Hg

D

difference in mercurry level is 228 mm.

Text Solution

Verified by Experts

The correct Answer is:
a,b,d
(a,b,d) `P_(T)=(1+3xx)=1+3xx0.1=1.3 atm.`
`/_\P=0.2atm or 76xx0.3cm" of "Hg`
`or 760xx0.3 mm " of " Hg`
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