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Questions
State the observation for the following:
When manganese dioxide reacts with concentrated HCl.
State one appropriate observation when concentrated HCl is added to manganese dioxide.
Very Short Answer
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Solution
When manganese dioxide reacts with concentrated HCl, a greenish-yellow gas is evolved. The gas is chlorine, which turns moist starch-iodide paper blue-black.
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
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Chapter 8: Study of Compounds A. Hydrogen Chloride - EXERCISE-8 [Page 158]
