What type of reaction is: iron + lead nitrate -> lead + iron nitrate? A: combustion, B: Decomposition. C: single replacement, D: synthesis

C. single replacement

Explanation:

In a single replacement reaction, one atom replaces another.

The general form of a single replacement reaction is: A + Bc ⇒ Ac + B

A   +  B  ×  c      ⇒   B   +  A × c

↓       ↓      ↓            ↓       ↓    ↓

Fe +  Pb(NO₃)₂ ⇒  Pb  + Fe(NO₃)₂

Iron switched places with lead so the reaction is a single replacement reaction.

Hope this helps.

pure substance: iron,copper

impure substance: water,charcoal

nacl is added to the aqueous of what? ? in order to get a proper answer you have to specify the exact composition of the aqueous solution.