Question
To make copper chloride you can mix hydrochloric acid and copper oxide.You keep adding copper oxide until there is an excess because then you know that all the acid has been __ . What is the missing word?
Answer
3.8
(265 Votes)
Ysella
Master · Tutor for 5 years
Answer
The missing word is "neutralized".
Explanation
This is a question about chemical reactions, specifically acid-base reactions. In this case, hydrochloric acid (an acid) is being mixed with copper oxide (a base). When an acid and a base react, they undergo a neutralization reaction to form a salt and water. In this case, the salt formed is copper chloride. The process of adding copper oxide until there is an excess ensures that all the hydrochloric acid has been neutralized, meaning it has reacted with the base to form the salt and water. Therefore, the missing word in the sentence is "neutralized".