Apotential source of error for this lab could arise if not enough acid was added to the iron solution before the titration was started. this would allow much of permanganate to go to mno2 rather then mn 2 . how would this affect the % of iron found at the end of the experiment

The manganese (II) oxide will act as a contaminant affecting the iron final result.

Explanation:

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In this case, a typical case in which a solution containing iron is titrated with potassium permanganate to oxidize the iron and consequently reduce the manganese into the permanganate. In such a way, by cause of the lack of acid, when manganese dioxide, is produced instead of manganese (II) ions, , such oxide will act as a contaminant in the final product collection, affecting the experiment reliability when finding the iron, that is why we must assure the total reduction to manganese (II) ions.

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the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

ugh fiel iente of insistí is did kiwis jaj