Cadmium arsenate is slightly soluble in water, ionizing as follows: C d 3 ( A s...

Cadmium arsenate is slightly soluble in water, ionizing as follows: C d 3 ( A s O 4 ) 2 ( s ) ⟺ 3 C d 2 + ( a q ) + 2 A s O 4 3 − ( a q ) K sp = 2.2 × 10 − 33 What is the solubility of cadmium arsenate in water? Give in scientific notation, to two significant figures: in this notation Avogadro's number would be 6.0E23 and Planck's constant would be 6.6E-34.

Expert Solution

C d 3 ( A s O 4 ) 2 ( s ) ⟺ 3 C d 2 + ( a q ) + 2 A s O 4 3 − ( a q )

K sp = 2.2 × 10 − 33

C d 3 ( A s O 4 ) 2 ( s ) ⟺ 3 C d 2 + ( a q ) + 2 A s O 4 3 − ( a q )

3s 2s

Ksp = [Cd^2+]^3[AsO4^3-]^2

= (3s)^3(2s)^2

2.2*10^-33 = 108s^5

S^5 = 2.2*10^-33/108

S^5 = 2.037*10^-35

S = 1.2*10^-7 M

solubility of cadmium arsenate = 1.2*10^-7 M >>>>>>answer

queen_honey_blossom answered 2 years ago

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