reaction between Na2a2o3+licro4

There is no such compound as

Na2A2O4. There is also no element with symbol A. The symbol for argon was changed from A to Ar about 50 years ago.

Be more careful about which letters you capitalize in a chemical compound. Lithium is Li, not li. There are two Li atoms in lithium chromate, which is a hydrate (with H2O attached)

I presume you mean sodium thiosulfate

NaS2O3?
and, as drwls has identified, lithium chromate?
Li2CrO4

In basic solution it will form Cr(OH)4- and SO42-

The reaction you mentioned is between Na2O3 and LiCrO4. To determine the products of this reaction, we need to understand the chemical formulas and properties of these compounds.

Na2O3 is sodium oxide. It consists of two sodium ions (Na+) and one oxide ion (O2-). LiCrO4 is lithium chromate, which consists of one lithium ion (Li+) and one chromate ion (CrO42-).

To determine the products of this reaction, we need to consider the charges of the ions involved. In a chemical reaction, ions combine in a way that neutralizes their charges.

In this case, the sodium ion (Na+) has a charge of +1, and the oxide ion (O2-) has a charge of -2. Similarly, the lithium ion (Li+) has a charge of +1, and the chromate ion (CrO42-) has a charge of -2.

To balance the charges, we will need two lithium ions to balance the charge of one chromate ion. Therefore, you need to have 2LiCrO4. Similarly, we will need three sodium ions to balance the charge of one oxide ion. So, we need 3Na2O3.

Now, we can write out the balanced chemical equation for the reaction:

3Na2O3 + 2LiCrO4 -> ?

To determine the products, we can use the principle of double displacement reactions. In such reactions, the cations (positively charged ions) and anions (negatively charged ions) in the reactants swap places to form new combinations.

In this case, the sodium ions (Na+) and chromium ions (Cr3+) will swap places, as well as the lithium ions (Li+) and oxide ions (O2-). This leads to the formation of new compounds:

3Na2O3 + 2LiCrO4 -> 3Li2O + 2Na2CrO4

So, the products of the reaction between Na2O3 and LiCrO4 are lithium oxide (Li2O) and sodium chromate (Na2CrO4).