Tests for Negative Ions

Question 1

What is the word equation for an acid and a carbonate?

Answer 1

Acid + Carbonate —> Salt + Water + Carbon Dioxide

Question 2

What tests can be done to identify halide ions?

Answer 2

Seeing if a solution reacting with nitric acid forms a silver nitrate solution.

Question 3

What does a chloride give and what is the symbol equation?

Answer 3

A chloride gives a white precipitate of silver chloride.

Ag+ + Cl- —> AgCl

Question 4

What does a bromide give and what is the symbol equation?

Answer 4

A bromide gives a cream precipitate of silver bromide.

Ag+ + Br- —> AgBr

Question 5

What does an iodide give and what is the symbol equation?

Answer 5

An iodide gives a yellow precipitate of silver iodide.

Ag+ + I- —> AgI

Question 6

What is the test for sulfate ions?

Answer 6

Dilute hydrochloric acid and then barium chloride solution (BaCl2).

Question 7

What is formed if sulfate ions are present and what is the word equation?

Answer 7

A white precipitate of barium sulfate.

Ba + SO4 —> BaSO4