Chemistry, 14.09.2019 08:30, emmapaschen
The concentration of the nitrate ion in a cc solution can be determined in a three-step process:
1.the zinc metal recycles nitrate ions into ammonia in a basic aqueous solution.
2.the ammonia is transferred to a solution containing a known but excess amount of hcl(aq).
3.the hcl(aq) that did not react with a solution of naoh(aq) standard solution
a. write a balanced chemical equation for the three reactions.
b. for sampling in volume of 25.00 ml, extracted from rustic well water contaminated with no3- (aq); added base and excess zinc metal. the ammonia gas which was emitted in the reaction was transferred into 50.00 ml of aqueous solution of hcl(aq) 2.5*10^-3m . the unreacted hcl(aq) solution was titrated to the stoichiometric point with 28.22 ml of 1.5*10^-3m naoh(aq)
what is the molecular concentration of the nitrate ion in the well water?
Answers: 3
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Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy
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The concentration of the nitrate ion in a cc solution can be determined in a three-step process:
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