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JAMB Chemistry 2007 Objective — Question 2

Question 2 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2007 Objective paper, with the correct answer and a full explanation.

MnO2(s) + xHCl(aq) -> MnCl2(aq) + yH2O(l) + zCl2(g). In the equation above, what are the values of x, y and z respectively?

A. 4,1,2
B. 1,2,1
C. 2,1,2
D. 4,2,1Correct

Explanation

The balanced equation is MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2, so x=4, y=2, z=1.

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