Four different aqueous metal nitrates are tested separately with aqueous sodium hydroxide, with dilute sulfuric acid and with a flame test. Which row shows the correct set of results for the named aqueous metal nitrate?
A.
B.
C.
D.
Exam No：0620_s25_qp_11 Year：2025 Question No：40
Answer:
B
Knowledge points:
6.3.1. State that some chemical reactions are reversible as shown by the symbol ⇌
Solution:
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