# How much NA2CO3 is needed for a full reaction with 1.0g CaCl2.2H2O?

##### 1 Answer
Oct 22, 2015

$N {a}_{2} C {O}_{3} \left(a q\right) + C a C {l}_{2} \cdot 2 {H}_{2} O \left(a q\right) \rightarrow 2 N a C l \left(a q\right) + C a C {O}_{3} \left(s\right) \downarrow + 2 {H}_{2} O \left(l\right)$

#### Explanation:

You have the chemical equation, now you have to determine the molar quantities of each reagent. Assume (reasonably) that calcium carbonate is insoluble, and will precipitate from solution.