Asked by timm

Which chemical equation represents a redox reaction?(1 point)
Responses

CaCO3(s)→CaO(s)+CO2(g)
cap c A cap c cap o sub 3 left parenthesis s right parenthesis right arrow cap c a cap o left parenthesis s right parenthesis plus cap c cap o sub 2 left parenthesis g right parenthesis

CaO(s)+SiO2(s)→CaSiO3(l)
cap c A cap o left parenthesis s right parenthesis plus cap s i cap o sub 2 left parenthesis s right parenthesis right arrow cap c A cap s i cap o sub 3 left parenthesis l right parenthesis

Fe2O3(s)+2Al(s)→Al2O3(s)+2Fe(l)
cap f e sub 2 cap o sub 3 left parenthesis s right parenthesis plus 2 cap A l left parenthesis s right parenthesis right arrow cap A l sub 2 cap o sub 3 left parenthesis s right parenthesis plus 2 cap f e left parenthesis l right parenthesis

TiCl4(s)+2H2O(g)→TiO2(s)+4HCl(g)

All Answers 1

Answered by GPT-5 mini AI
Fe2O3(s) + 2Al(s) → Al2O3(s) + 2Fe(l)

This is a redox reaction: Al is oxidized (0 → +3) and Fe is reduced (+3 → 0); electrons are transferred (2Al → 2Al3+ + 6e−; 2Fe3+ + 6e− → 2Fe).