English

How Will You Test for the Presence of this Gas? - Science

Advertisements
Advertisements

Question

How will you test for the presence of this gas?

Solution

When the gas, liberated during the reaction, is passed through lime water, the lime water turns milky or a white precipitate of calcium carbonate is formed. This confirms that the gas is none other than carbon dioxide.

shaalaa.com
  Is there an error in this question or solution?
Chapter 2: Acids, Bases and Salts - Exercise 1 [Page 67]

APPEARS IN

Lakhmir Singh Chemistry (Science) [English] Class 10
Chapter 2 Acids, Bases and Salts
Exercise 1 | Q 21.2 | Page 67

RELATED QUESTIONS

What colour do the following indicators turn when added to a base or alkali (such as sodium hydroxide)?
(a) methyl orange


What colour do the following indicators turn when added to a base or alkali (such as sodium hydroxide)?

red cabbage extract


What happens when dilute hydrochloric acid is added to sodium carbonate? Write a balanced chemical equation of the reaction involved.


 10 mL of a solution of NaOH is found to be completely neutralised by 8 mL of a given solution of HCl. If we take 20 mL of the same solution of NaOH, the amount of HCl solution (the same solution as before) required to neutralise it will be:
(a) 4 mL
(b) 8 mL
(c) 12 mL
(d) 16 mL


You have been provided with three test-bubes. One  of these test-tubes contains distilled water and the other two contain an acidic and a basic solution respectively. If you are given only blue litmus paper, how will you identify the contents of each test-tube?


What is common in all the water soluble bases (or alkalis)?


Choose the correct option from given alternative:
When a small amount of acid is added to water, the phenomena which occur are:
(A) Dilution
(B) Neutralization
(C) Formation of H3O+ ions
(D) Salt formation


In the experimental set-up to show that "the germinating seeds give out carbon dioxide", answer the following questions:
(i) Why do we keep the conical flask airtight?
(ii) Name the substance kept in the small test tube inside the conical flask. Write its role.
(iii) Why does water rise in the delivery tube?


Which of the following is(are) true when HCl (g) is passed through water?

  1.  It does not ionise in the solution as it is a covalent compound.
  2.  It ionises in the solution
  3. It gives both hydrogen and hydroxyl ions in the solution
  4.  It forms hydronium ion in the solution due to the combination of hydrogen ion with water molecule

  1. A compound 'A' with a molecular formula of \[\ce{C2H4O2}\] reacts with a base to give salt and water. Identify 'A', state its nature and the name of the functional group it possesses. Write chemical equation for the reaction involved.
  2.  When the above stated compound 'A' reacts with another compound 'B' having molecular formula \[\ce{C2H6O}\] in the presence of an acid, a sweet smelling compound is 'C' formed.
    1. Identify 'B' and 'C'.
    2. State the role of acid in this reaction.
    3. Write chemical equation for the reaction involved.

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×