Question

Na2SO4 + BaCl2 → BaSO4 + NaClZnO + HNO3 → Zn(NO3)2 + H2OFeSO4 + NaOH → Na2SO4 + Fe(OH)2​

Answer 1

Ответ:

ZnO + HNO3 → Zn(NO3)2 + H2O

Answer 2

The reaction you've mentioned is a series of chemical reactions. Let's break it down:

1. BaCl2 + Na2SO4 → NaCl + BaSO4

This is a double displacement reaction, also known as a metathesis reaction. In this reaction, barium (Ba) from barium chloride (BaCl2) and sodium (Na) from sodium sulfate (Na2SO4) switch places to form barium sulfate (BaSO4) and sodium chloride (NaCl) [Source 5](https://vietjack.com/phan-ung-hoa-hoc/phuong-trinh-bacl2-na2so4.