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CONTROL TASKS

For reactions:

NaClO + KI + H 2SO 4  NaCl + I 2 + K 2SO 4 + H 2O,

K 2Cr 2O 7 + Na 2SO 3 + H 2SO 4 Cr 2(SO 4) 3 + K 2SO 4 +Na 2SO 4+ H 2O,

Zn + HNO 3 → Zn(NO 3) 2 + NH 4NO 3 + H 2O,

CuS + HNO 3 → Cu(NO 3) 2 + S + NO + H 2O,

H 2S + HNO 3 → H 2SO 4 + NO 2 + H 2O,

K 2MnO 4 + H 2O → KMnO 4 + MnO 2 + KOH,

H 2S + HNO 3 → H 2SO 4 + NO 2 + H 2O

1. make up an electronic schemes.

2. identify the oxidation and reduction processes.

3. name the oxidizer and the reducing agent.

4. match the coefficients and complete the reaction equation.

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