ion testing for group 2 and 7

Question 1

what is the test for chloride

Answer 1

-Test: Add dilute nitric acid followed by silver nitrate solution.
-ionic Equation: Ag⁺(aq) + Cl⁻(aq) → AgCl(s)

Question 2

what is the test for bromide

Answer 2

• Test: Add dilute nitric acid followed by silver nitrate solution.
  
  • Ionic Equation: Ag⁺(aq) + Br⁻(aq) → AgBr(s)

Question 3

what is the test for iodide

Answer 3

• Test: Add dilute nitric acid followed by silver nitrate solution.
  
  • Ionic Equation: Ag⁺(aq) + I⁻(aq) → AgI(s)

Question 4

what is the test for magnesium ion

Answer 4

• Test: Add sodium hydroxide (NaOH).
• Mg2+ gives white ppt
  
  • Ionic Equation: Mg²⁺(aq) + 2OH⁻(aq) → Mg(OH)₂(s)

Question 5

what is the test for calcium ion

Answer 5

• Test: Add sodium hydroxide (NaOH).
• calcium ion gives white ppt with NaOH
  
  • Ionic Equation: Ca²⁺(aq) + 2OH⁻(aq) → Ca(OH)₂(s)