which pair of substances would most likely result in the production of a solid when reacting with a base?\no…

which pair of substances would most likely result in the production of a solid when reacting with a base?\no litmus and phenolphthalein\no soluble metal salt and carbon dioxide\no acids and water\no hydrogen ions and soaps
Answer
Brief Explanations:
Litmus and phenolphthalein are indicators, acids and water form solutions, hydrogen - ions and soaps react in a different way. A soluble metal salt and carbon dioxide reacting with a base can form a metal carbonate precipitate (a solid). For example, calcium hydroxide (a base) reacting with carbon dioxide and a soluble calcium salt can form calcium carbonate solid.
Answer:
soluble metal salt and carbon dioxide