International General Certificate of Secondary Education (IGCSE) Chemistry Practice Exam

Disable ads (and more) with a membership for a one time $4.99 payment

Prepare for the IGCSE Chemistry Exam with our comprehensive quiz. Practice with multiple choice questions and detailed explanations to boost your understanding. Excel in your examination journey!

Practice this question and more.

Which statement describes the appearance of barium sulfate precipitate?

It appears green
It appears white
It appears yellow
It appears pink

The correct answer is: It appears white

Barium sulfate is known for forming a white precipitate when barium ions react with sulfate ions in a solution. This characteristic is due to the low solubility of barium sulfate in water. When these ions combine, the solid precipitate that forms is typically observed as a bright white, chalky substance. This white coloration is a distinguishing feature that helps identify barium sulfate in chemical analyses. The other color options do not accurately represent the physical appearance of barium sulfate under normal conditions, as it does not exhibit green, yellow, or pink colors.