Non-metals and their compounds questions | form four Chemistry

(3884) Question Category: Short answers

(i) Write the reaction equations involved in the industrial manufacturing of sulphuric acid starting with sulphur dioxide in the contact process.
(ii) Explain why sulphur trioxide is not dissolved directly in water to obtain sulphuric acid in contact process.

Answer / Solution

UNSOLVED

(4338) Question Category: Short answers

The following flow diagram shows the stages in the contact process.

Non-metals and their compounds- contact process

(i) Give the names of element A, catalyst B and an acid C.
(ii) Write a balanced chemical equation for the formation of sulphur trioxide in stage 2.

Answer / Solution

UNSOLVED

(4351) Question Category: Short answers

Carbon dioxide can be prepared by adding an acid to calcium carbonate.
(i) Using a named acide, write a balanced chemical equation for the reaction.
(ii) Name all the products formed in  (i).

Answer / Solution

UNSOLVED

(4929) Question Category: Multiple choices

Which among the following equations correctly shows the reaction between chlorine gas and water?

  1. Cl_{2(g)}+H_{2}O_{(l)} ightarrow Cl_{2(g)}
  2. 2Cl_{2(g)}+2H_{2}O_{(l)} ightarrow 4Cl_{(aq)}^{-}+O_{2(g)}+2H_{2(g)}
  3. Cl_{2(g)}+H_{2}O_{(l)} ightarrow HCl_{(aq)}+HOCL_{(aq)}
  4. 2Cl_{2(g)}+3H_{2}O_{(l)} ightarrow Cl_{2(g)}+2H_{3}O^{+}

Answer / Solution

  1. Cl_{2(g)}+H_{2}O_{(l)} ightarrow HCl_{(aq)}+HOCL_{(aq)}

(4931) Question Category: Multiple choices

Which among the following pair of substances are allotropes?

  1. H_{2}O , and , H_{2}O_{2}
  2. ^{12}C , and , ^{14}C
  3. P_{4} , and , P_{8}
  4. H_{2} , and , 2H^{+}
  5. H^{+} , and , H_{3}O

Answer / Solution

UNSOLVED

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