Question

Number of Ca^+2 and Cl^- ion in 111g of anhydrous CaCl2 are

(A) Nα , 2Nα

(B) 2Nα , Nα

(C) Nα , Nα

(D) None

Explaination required..
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NOTE -
here,
Nα = Avogadro's Number ​

Answer 1

Answer:

(A) Nα , 2Nα

Explanation:

Molecular mass of CaCl2 is

• 40 + 35.5 × 2

• 40 + 71

• 111 gram

No. of moles × Gram molecular mass = Mass

• No. of moles = 111/111

• No. of moles = 1

Now,

• No. of Ca in CaCl2 is

• 1 × 6.022 × 10²³

• 6.022 × 10²³

Nα

And

• No. of Cl2 in CaCl2 is

• 1 × 2 × 6.022 × 10²³

2Nα

Avogadro's Number , Nα = 6.022 × 10²³

Answer 2

A.) Na , 2Na

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