Problem: The labels have fallen off two bottles, one containing Mg(NO3)2 and the other containing Pb(NO3)2. You have a bottle of dilute H 2SO4. How could you use it to test a portion of each solution to identify which solution is which?

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The labels have fallen off two bottles, one containing Mg(NO3)2 and the other containing Pb(NO3)2. You have a bottle of dilute H 2SO4. How could you use it to test a portion of each solution to identify which solution is which?