A open ended mercury manometer is used to measure the pressure exerted by a trapped gas…
Chemistry · JEE Advanced · NTA Exams — States of Matter (Gases and Liquids)
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’ dissociated according to following reaction
\(\mathrm{A}(\mathrm{~g}) \longrightarrow \mathrm{B}(\mathrm{~g})+3 \mathrm{C}(\mathrm{~g})\)
If pressure of Gas “A” decreases to 0.9 atm. Then (Assume temperature to be constant and is 300 K)
After sparking ‘A’ dissociated according to following reaction
\(\mathrm{A}(\mathrm{~g}) \longrightarrow \mathrm{B}(\mathrm{~g})+3 \mathrm{C}(\mathrm{~g})\)
If pressure of Gas “A” decreases to 0.9 atm. Then (Assume temperature to be constant and is 300 K)
- total pressure increased to 1.3 atm
- total pressure increased by 0.3 atm
- total pressure increased by 22.3 cm of Hg
- difference in mercury level is 228 mm.
Answer
(B) total pressure increased by 0.3 atm, (D) difference in mercury level is 228 mm.
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