Question

Find the charge in coulombs required to convert 0.2 mole
VO₃⁻² into VO₄⁻³
(a) 1.93 × 10⁴ (b) 9.65 × 10⁴
(c) 1.93 × 10⁵ (d) 9.65 × 10⁵

Answer 1

Answer:

1.93×10 raised to 4 (a)

Explanation:

mark me as brainliest

Answer 2

The charge in coulombs required to convert 0.2 mole

VO₃⁻² into VO₄⁻³

(a) 1.93 × 10⁴

In VO₃⁻² , first we need to find out the oxidation state of V.

Let it be 'x'.

As the oxidation state of O = -2, so

x + 3(-2) = -2

⇒ x - 6 = -2

⇒ x = 4

So, the oxidation state is +4

In VO₄⁻³ , first we need to find out the oxidation state of V.

Let it be 'y'.

As the oxidation state of O = -2, so

y + 4(-2) = -

⇒ y - 8 = -3

⇒ y = 5

So, the oxidation state is +5

Thus the change in oxidation state = 5 - 4 = 1

For 1 mole change in electron change in oxidation, change in charge is 96500C

So, for 0.2 mole change, change in charge = (96500*0.2)C

= 1.93 × 10⁴ C

So, option (a) is correct.