Tests

Question 1

SO4^2-

Answer 1

1. add BaCl2(aq)
2. or add Ba(NO3)2 (aq)
3. produces white ppt
4. BaSO4(s)

Question 2

CO3^2-

Answer 2

1. add dilute HCl
2. effervescence produced(CO2)
3. turns limewater cloudy

Question 3

NH4+

Answer 3

1. warm with NaOH
2. NH3(g) produced
3. produces moist red litmus blue

Question 4

Cl-

Answer 4

1. acidify with dilute HNO3(aq)
2. add AgNO3(aq)
3. white ppt formed
4. add dilute NH3(aq)
5. dissolves

Question 5

Br-

Answer 5

1. acidify with dilute HNO3(aq)
2. add AgNO3(aq)
3. cream ppt formed
4. add conc NH3(aq)
5. dissolves

Question 6

I-

Answer 6

1. acidify with dilute HNO3(aq)
2. add AgNO3(aq)
3. yellow ppt formed
4. add dilute NH3(aq)
5. doesn’t dissolve

Question 7

Hydrogen

Answer 7

1. lit wooden splint
2. hold at end of test tube
3. produces pop sound

Question 8

Oxygen

Answer 8

1. glowing wooden splint
2. rekindles in oxygen

Question 9

Chlorine

Answer 9

1. bleaches damp litmus paper
2. turns white