Question

what happens when ca0cl2 is kept in the air

Answer 1

$when \: ca0c12 \: i \: exposed \: to \: air \: it \: gives \: smell \: of \: chlorine. \: thi \: is \: ecause \: the \: ca0c12 \: recats \: with \: carbon \: dioxide \: from \: atmosphere \: to \: produe \: calcium \: carbonte \: an \: chlorine.$

Answer 2

Caocl2 + co2 —————> caco3 + cl2