Question bank/JEE Main/Chemistry

At 373 K, a gaseous reaction A→ 2B + C is found to be of first
order. Starting with pure A, the total pressure at the end of 10 min was
176 mm of Hg and after a long time when A was completely dissociated, it
was 270 mm of Hg. The pressure of A at the end of 10 minutes was

A94 mm of HgB47 mm of HgC43 mm of HgD90 mm of Hg

Show answer and solution▾

[IMAGE] Pressure of A after 10 minute = 90 - 43 = 47

Source: Grass-G / CH-15 Chemistry Paper 11 Nov..docx