English

Write the Steps Needed for Flame Test ?

Advertisements
Advertisements

Question

Write the steps needed for flame test ?

Short/Brief Note
Advertisements

Solution

Flame test :
1. Make a loop at the tip of the platinum wire and dip it in conc. HCl.
2. Put it on the non luminous part of the flame, to see if it gives colour. Repeat the process till it gives no colour to the flame.
3. Prepare a paste of the given salt in a watch glass using conc. HCl.
4. Load the loop of the wire with this prepared paste and introduce it into the non luminous flame of the bunsen burner and then observe the colour of the flame indicating different elements.

shaalaa.com
  Is there an error in this question or solution?
Chapter 18: Practical Work - Exercise 1 [Page 307]

APPEARS IN

Frank Chemistry Part 2 [English] Class 10 ICSE
Chapter 18 Practical Work
Exercise 1 | Q 4 | Page 307

RELATED QUESTIONS

Name the experiment which demonstrates that hydrogen chloride is soluble in water.


Name the gas evolved when dilute hydrochloric acid is added to: Potassium bisulphite


Give a balanced equation when dilute hydrochloric acid is added to : Calcium carbonate


Give a balanced equation when dilute hydrochloric acid is added to : Magnesium bicarbonate


  1. Give only one suitable chemical test to identify the following gases.
    1. Ammonia
    2. Sulphur dioxide
    3. Hydrogen chloride
    4. Chlorine
    5. Carbon dioxide
    6. Oxygen
    7. Hydrogen
  2. Select a basic gas mentioned in Q. (a). How is the basic nature suspected?
  3. Select acidic gases from the gases mentioned in Q. (a). How is the acidic nature suspected?
  4. The two gases A and B are bleaching agents. A is greenish-yellow and bleaches due to its oxidizing property while B is a colourless gas that bleaches due to reduction. Identify A and B?
  5. Which gas turn blue cobalt chloride paper light pink? Give one similarity in the test between
    1. Cl2 and HCl
    2. SO2 and CO2.

Complete and balance the following reaction, state whether dilute or conc. acid is used.

\[\ce{NH4OH + HCl->}\]


Complete and balance the following reaction, state whether dilute or conc. acid is used.

 \[\ce{NH4OH + HCl ->}\]


Study the flow chart and give balanced equations with conditions for the conversions A, B, C, D and E.


Study the flow chart and give balanced equations with conditions for the conversions A, B, C, D and E. 


Study the flow chart and give balanced equations with conditions for the conversions A, B, C, D and E.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×