August 2021 1 26 Report

1. Дана схема превращений:
Fe+X→Fe(NO3)2+Y→FeS. Определите вещества X и Y.

1) X – AgNO3, Y – Na2S

2) X – NH4NO3, Y – S

3) X – KNO3, Y – H2S

4) X – Cu(NO3)2, Y – CuS

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