An unknown solid contains either NaBr NH_4NO_3, KCl. An aqueous solution of unkn

Question

An unknown solid contains either NaBr NH_4NO_3, KCl. An aqueous solution of unknown solid produces a precipitate on the addition of AgNo_3-. The unknown solid is a. NaBr b. NH_4NO_3 c. either NaBr or KCl d. either NH_4NO_3 or KCl e. KCl 2. Consider a sample of ethanol CH_3CH_2OH (structural formula is shown below). The intermolecular forces that are present are a. hydrogen bonding b. ion-ion c. ion-dipole d. London dispersion forces e. London dispersion forces and hydrogen bonding If you take the following two measurements what is the mass of the FeCl_3 used? Mass of beaker = 11.00 g Mass of beaker FeCl_3 = 12.31g a. 2.31 g b. 1.31 g c. 3.31 g d. 12.31 g e. 11.00 g

Explanation / Answer

1) option C - either NaBr or KCl forma a precipitate with AgNO3

2) option e - London dispersion forces and Hydrogen bonding

3) Mass of FeCl3 used = 12.31 g - 11.0 g = 1.31 g . so, option b

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