${\mathrm{BaCl}}_2\left(\mathrm{aq}\right)+{\mathrm{Na}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to {\mathrm{BaSO}}_4\left(\mathrm{ppt}\right)+2\mathrm{NaCl}\left(\mathrm{aq}\right)$What is the colour of precipitate formed?

$BaC{l}_2\left(aq\right)+N{a}_{2}S{O}_4\left(aq\right)\to BaS{O}_4\left(ppt\right)+2NaCl\left(aq\right)$

What is the colour of precipitate formed?

What can be inferred from the following equation?

${\text{Na}}_2{\text{SO}}_4\left(\text{aq}\right)+{\text{BaCl}}_2\left(\text{aq}\right)\to {\text{BaSO}}_4\left(\text{s}\right)+2\text{NaCl}\left(\text{aq}\right)$.

$CuS{O}_4\left(aq\right)+H_{2}S\left(g\right)\to CuS\left(ppt\right)+H_{2}S{O}_4\left(aq\right)$

What is the colour of precipitate formed in the above precipitation reaction?

What is the colour of precipitate formed when lead nitrate reacts with potassium iodide?