What mass of copper would be deposited by a current of 1....
What mass of copper would be deposited by a current of 1. 0 ampere passing for 965 seconds through copper (ll) tetraoxosulphate (IV) solution? [Cu = 63.5; 1F = 96500C]
0.318g
0.635g
18g
6.35g
9.65g
Correct answer is A
Cu2+ + 2e- → Cu, From the equation 2 Faraday will liberate 63.5gm of copper The quantity of electricity passed (Q) Q = 1. 0 965 = 965 coulomb :. 2 x 96500 → 63.5, 965 → x. x = 965 / 2x96500 x 63.5 = 0.3175g ≈ 0.328
Which of the following is NOT involved in the extraction of metals from their ores?...
GAS CO2 N2 O2 % BY VOLUME 4 72 24 The above table shows t...
with conc H2SO4 as catalyst CH3COOH + C2H5OH → CH3COOC2H5 + H2O...
What volume of 0.5 mol dm-3 H2SO4 will exactly neutralize 20cm3 of 0.1 mol dm-3 NaOH solution?...
Which of these is an acid salt? ...
Which of the following statements is correet for a reaction at equilibrium? ...
In the diagram above the activation energy is represented by ...
Alkanals can be distinguished from alkanones by the reaction with ...
consider the reaction represented by the following equation: 2SO2 + O2 ⇌ 2SO\...