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Write a chemical equation of a reaction ...

Write a chemical equation of a reaction where the following change have taken place.
change in colour

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`2NO(g)+O_(2)(g)to2NO_(2)(g)`.
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ZEN PUBLICATION-CHEMICAL REACTIONS AND EQUATIONS-ZEN ADDITIONAL QUESTIONS SECTION (SHORT ANSWER [SA] TYPE 2 QUESTIONS )
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  10. What are thermochemical reactions ? Give two examples.

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  17. On passing excess carbon dioxide gas through lime water, it first turn...

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