Question

Water is electrolysed by one ampere current for 16 minute 5 second using inert electrode what is the volume of gas at STP

Answer 1

Answer: 70 ml80 ml

Explanation:

Answer 2

Answer: 56 ml

Explanation:

Dear Student,

Anode : H2O → 2H+ + 12O2 +2e−Cathode : Cu2+ + 2e− → CuQuantity of electricity passed, Q=Itor, Q=1×(16×60+5) = 1×965= 965 CAmount of electrons passed= 96596500=0.01 molOn passing 2 mol of e− ,12 mol of gas is evolved.So, on passing 0.01 mol of electrons, amount of gas evolved = 12×2×0.01=0.0025 mol Volume of O2 liberated = 0.0025×22.4=0.056 L=56 ml

therefore leaving the correct answer to be 56 ml