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Sodium ferrocyanide is used as anti-caking agent in salts and salt substitute. Due to contact with…
Sodium ferrocyanide is used as anti-caking agent in salts and salt substitute. Due to contact with atmospheric moisture, table salt undergoes clumping. Adding certain amount of sodium ferrocyanide can prevent this from occurring.
Consider the coordination compounds $\text{Na}_4[\text{Fe}(\text{CN})_6]$ and $[\text{Fe}(\text{H}_2\text{O})_6]\text{Cl}_2$.
Based on above description, answer the following questions:
(a)
Though cyanide is poisonous, potassium ferrocyanide is used as food additive. Explain.
(b)
Which compound will be more stable $\text{Na}_4[\text{Fe}(\text{CN})_6]$ or $[\text{Fe}(\text{H}_2\text{O})_6]\text{Cl}_2$? Justify your answer.
(c)
Write the hydrate isomer of $[\text{Fe}(\text{H}_2\text{O})_6]\text{Cl}_2$, which gives one mole of precipitate with $\text{AgNO}_3$ solution.
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From ISC 2025 Practice Chemistry, question 87.