The following flow diagram represents the manufacturing of sodium carbonate.

Which of the following options describes the reagents products and reaction conditions (given in parentheses) ?

Options

A. `{:(a,b,c,d),("Carbon dioxide","NaCl","NH_4Cl,"Heat"):}`
B. `{:(a,b,c,d),("Carbon dioxide","NaCl","NH_4Cl,"Catalyst"):}`
C. `{:(a,b,c,d),("Higher tempt.","NaCl","NH_4Cl,"Heat"):}`
D. `{:(a,b,c,d),("Higher pressure","NaCl","NH_4Cl,"Catalyst"):}`

Answer

A

Explanation

`NH_3+H_2O+CO_3to(NH_4)_2CO_3overset(CO_2)toNH_4HCO_3`
`NH_4HCO_3+NaCltoNaHCO_3+NH_4Cl`
`2NaHCO_3underset(1373K)overset("Heat")toNa_2CO_3+CO_2+H_2O`