Dipping iron article into a strongly alkaline solution of sodium phosphate

Question

Dipping iron article into a strongly alkaline solution of sodium phosphate (A) does not affect the article (B) forms Fe2O3. xH2O on the surface (C) forms iron phosphate film (D) forms ferric hydroxide

Tardigrade Admin · Accepted Answer

In electrochemical series, iron is placed below sodium, so it cannot displace sodium from its salt solution. Hence, no reaction takes place Fe + Na3PO4 → No reaction

Q. Dipping iron article into a strongly alkaline solution of sodium phosphate

does not affect the article

forms $F e_{2} O_{3} . x H_{2} O$ on the surface

forms iron phosphate film

forms ferric hydroxide

In electrochemical series, iron is placed below sodium, so it cannot displace sodium from its salt solution. Hence, no reaction takes place
$F e + N a_{3} P O_{4} \to$ No reaction