Question
(b) When a piece of sodium is added to water, sodium hydroxide and a gas are produced. (i) Identify the gas produced. A carbon dioxide B hydrogen C nitrogen D oxygen (ii) Give one use of sodium hydroxide. (1) (1)
Answer
4.4
(163 Votes)
Vaughn
Veteran · Tutor for 10 years
Answer
(i) The gas produced is Hydrogen. (ii) One use of sodium hydroxide is in paper making.
Explanation
## Step 1:This question is similar to the example given. It involves a chemical reaction where sodium metal reacts with water to produce sodium hydroxide and a gas.## Step 2:(i) To identify the gas that was produced, we will refer back to our notes or textbooks on chemical reactions involving sodium and water. Here, we learn that when a piece of sodium is added to water, it produces sodium hydroxide and hydrogen gas.## Step 3:(ii) Sodium hydroxide is a useful substance in various industrial and household contexts. Its properties make it suitable for use in common applications such as drain cleaners or chemical manufacturing. Particularly, in the paper industry, it's used to process raw materials into paper products.### The correctly balanced chemical reaction is \( 2Na(s) + 2H_{2}O(l) \rightarrow 2NaOH(aq) + H_{2}(g) \).