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-Practice Exam3 Topics 2 of 36 9 1012 16 19 20 The names and chemical formulae o

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Question

-Practice Exam3 Topics 2 of 36 9 1012 16 19 20 The names and chemical formulae of some chemical compounds are written in the first two columns of the table below. Each compound is soluble in water. that a few tenths of a mole of each compound is dissolved in a iter of water. Then, write down in the third column of the table the chemical formula of will be present, so you can begin each list with the chemical the major chemical formula for water (H2O). species that will be present in this solution. For example, you know water itself Note: "major" chemical species are those present in concentrations greater than 10m/L in water N,o CH,CN ZnBr 6

Explanation / Answer

Ans. N2O(g) + 2H2O(l) = NH4NO3(s)

NH4NO3, Ammonium Nitrate salt is formed

CH3CN(l) + 2H2O (l) = CH3COOH(aq) + NH3(aq)

ZnBr2(s) + H2O(l) = Zn(OH)2 + 2HBr(aq)

species form = Zn2+ , OH-, H+, Br-