Question

1. The observations of the vitamin solution reactivity for the ions tests were given without taking into account the initial appearance of the vitamin solution. Recalling your observations of the vitamin solution appearance after its preparation (in A), how do you think its initial appearance would have change the observations when a white precipitate was observed?

2. For the test to detect the ammonium NH4+ ions using NaOH, a gas is produced.

a. What is the name and formula of the gas?

b. What was used to detect the gas? How did you know the gas was present?

c. If the gas is detected, does it indicate that NH4+ ions are present in the initial solution or not?

3. For the test to detect the carbonate CO32- ions using HCl, a gas is produced.

a. What is the name and formula of the gas?

b. What was used to detect the gas? How did you know the gas was present?

c. If the gas is detected, does it indicate that CO32- ions are present in the initial solution or not?

During the course of this lab, you detected the presence of two different cations and one anion in your vitamin solution.

a. Give the symbols of these ionsand specify for each if it is anessential or a trace element (see page 1-2 of lab).

b. Each cation can combine with the anion to make an ionic compound. Find the chemical formulas and names of the 2 possible compounds using the cations and anion listed above. 5.

Choose a medication, nutritional supplement, bathroom product or cleaning agent from your home and review the ingredients list. For each listed ingredient that is an ionic compound give its name and convert the name into a chemical formula. Please provide the type or name of the product chosen. Make sure to NOT list any covalent compound or organic compound (made of nonmetals only).

Answer 1