Which of the following formula correctly

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Target Exam

CUET

Subject

Chemistry

Chapter

Inorganic: Coordination Compounds

Question:

Which of the following formula correctly represents the double salt "Carnallite"?

Options:

$NaCl.MgCl_2.6H_2O$

$KCl.MgCl_2.6H_2O$

$KCl.CaCl_2.6H2_O$

$K_2SO_4.Al_2(SO_4)_3.12H_2O$

Correct Answer:

$KCl.MgCl_2.6H_2O$

Explanation:

The correct answer is Option (2) → $KCl.MgCl_2.6H_2O$

Carnallite is a well-known double salt of potassium chloride and magnesium chloride with water of crystallization.

Its correct chemical formula is:

$\text{KCl·MgCl}_2·6\text{H}_2\text{O}$