Question
ELECTROLYSIS is used to extract some metals from their ORES... because it requires LESS ENERGY than reduction with CARBON if the metals are TOO REACTIVE for reduction with CARBON if the metals are TOO UNREACTIVE for reduction with CARBON because it is an ENVIRONMENTALLY friendly method
Answer
4.7
(229 Votes)
Roger
Professional · Tutor for 6 years
Answer
C
Explanation
## Step 1: Identify the context of the question. The question is about the use of electrolysis in extracting metals from their ores.## Step 2: Understand the properties of electrolysis. Electrolysis is a process that uses electrical energy to drive a non-spontaneous chemical reaction.## Step 3: Analyze each option provided:- **Option A**: "because it requires LESS ENERGY than reduction with CARBON" - Electrolysis typically requires more energy than reduction with carbon, so this is incorrect.- **Option B**: "if the metals are TOO UNREACTIVE for reduction with CARBON" - Unreactive metals can often be extracted by reduction with carbon, so this is incorrect.- **Option C**: "if the metals are TOO REACTIVE for reduction with CARBON" - Highly reactive metals cannot be reduced by carbon and require electrolysis, so this is correct.- **Option D**: "because it is an ENVIRONMENTALLY friendly method" - While electrolysis can be environmentally friendly, this is not the primary reason it is used for extracting metals from ores.## Step 4: Conclude that the correct answer is based on the reactivity of the metals.#