#### Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Click to Chat

1800-1023-196

+91-120-4616500

CART 0

• 0
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

# At 100oC, the gaseous reaction A ® 2B + C is found to be first order. On starting pure A, it is found that at the end of 10 minutes the total pressure of system is 176.0 mm of Hg. After a long time the pressure = 270.0 mm Hg. The partial pressure of A at end of 10 minutes is (in mm of Hg)          (A)    43        (B)    47        (C)    94(D)    86

247 Points
7 years ago

For the reaction,

A              2B     +      C

Initial pressure    po             0              0

After 10 min       Po−x          2x             x

After long time    −              2po            po

Since p  no. of moles and after long time only B and C are formed, A has completely disappeared \ pressure of 270 mm is for 3 moles of gaseous products.

or p due to one mole = 270/3 = 90 mm

Hence initial pressure = 90 mm

\ pressure at 10 min = 176 = 90−x + 2x + x

or    x=(176-90)/2=43     mm

or Pressure due to A to 10 minutes = 90 – 43

= 47 mm

naresh masaboina
38 Points
7 years ago

b