A mixture of 2 . 3 g formic acid and 4 . 5 g oxalic acid is treated with concentrate H 2 SO 4 . The evolved gaseous mixture is passed through KOH pellets. What will be the weight in grams of the remaining product at STP ?

Question

A mixture of 2 . 3 g formic acid and 4 . 5 g oxalic acid is treated with concentrate H 2 SO 4 . The evolved gaseous mixture is passed through KOH pellets. What will be the weight in grams of the remaining product at STP ?, 2 . 8, 3 . 0, 1 . 4, 4 . 4

MARKS App · Accepted Answer

For gases n ∝ V : CO 2 is absorbed by KOH . So the remaning product is only CO . moles of CO formed from both reactions = 1 20 + 1 20 = 1 10 Left mass of CO = moles × molar mass = 1 10 × 28 = 2 .8 g

Search any question & find its solution

Looking for more such questions to practice?