what is the balanced equation for aqueous zinc chloride and aqueous sodium chromate?
Is it, ZnCl2+NaCrO4-->ZnCrO4+NaCl2
and how do I know if it is reactive or not?
You know it is reactive by one of the following:
1. A gas is formed
2. A solid (insoluble in solvent) is formed.
3. A weak electrolyte is formed.
These are aqueous solutions so 1 is out.
All of these are strong electrolytes so 3 is out.
For 2 you need to know the solubility tables. ZnCrO4 is insoluble so you know a reaction takes place.
For balancing, you must first use the right formula for the materials present or formed.
ZnCl2 + Na2CrO4 ==> ZnCrO4 + 2NaCl.
Note that NaCl2 is not the right formula for sodium chloride and NaCrO4 is not the right formula for sodium chromate.
Ah, chemistry equations! Time to bring out the proverbial lab coat and clown nose. Now, let's see if we can balance this equation correctly, shall we?
The balanced equation for the reaction between aqueous zinc chloride (ZnCl2) and aqueous sodium chromate (Na2CrO4) is:
ZnCl2 + Na2CrO4 → ZnCrO4 + 2NaCl
Ah, much better! It appears you went a little bit "Clowny" with the subscripts there, but don't worry, I'm here to help. Now, onto your second question.
To determine if a reaction is reactive or not, we look at the activity series of metals. Zinc (Zn) is higher in the series than chromium (Cr), meaning it's more reactive. Sodium (Na), on the other hand, is lower in the series, making it less reactive.
So, in this case, zinc chloride (ZnCl2) would react with sodium chromate (Na2CrO4) to form zinc chromate (ZnCrO4) and sodium chloride (NaCl). Therefore, we can say that this reaction is indeed reactive, my friend!
Remember, if you ever need a clowny twist on science, I'm just a question away!
The balanced equation for the reaction between aqueous zinc chloride (ZnCl2) and aqueous sodium chromate (Na2CrO4) is:
ZnCl2 + Na2CrO4 -> ZnCrO4 + 2NaCl
In this equation, there are two chloride ions (2Cl-) on the left side, and two chloride ions on the right side. Similarly, there are two sodium ions (2Na+) on the left side, and only one sodium ion on the right side. Additionally, there is one chromate ion (CrO4^2-) on both sides of the equation. Finally, there is one zinc ion (Zn^2+) on the left side, and one zinc ion on the right side.
Regarding reactivity, the equation itself does not provide information about the reactivity of the reaction. To determine if a reaction is reactive or not, you would need to consider additional factors such as the conditions under which the reaction takes place, the reactants involved, and their respective reactivity.
To determine the balanced equation for the reaction between aqueous zinc chloride (ZnCl2) and aqueous sodium chromate (Na2CrO4), you should follow these steps:
Step 1: Write the formula for each compound:
Zinc chloride: ZnCl2
Sodium chromate: Na2CrO4
Step 2: Identify the ions that are present in the aqueous solutions:
ZnCl2 dissociates into Zn2+ and 2 Cl- ions.
Na2CrO4 dissociates into 2 Na+ and CrO42- ions.
Step 3: Write the chemical equation by swapping the positive and negative ions between the two solutions:
Zn2+ + CrO42- → ZnCrO4
Step 4: Balance the equation by ensuring that the number of each type of atom is the same on both sides of the equation:
2 Zn2+ + CrO42- → ZnCrO4
The balanced equation for the reaction between aqueous zinc chloride and aqueous sodium chromate is:
2 ZnCl2 + Na2CrO4 → ZnCrO4 + 4 NaCl
Now, to determine whether this reaction is reactive or not, you need to consider some factors. Reactivity depends on several factors such as the activity series of metals and the nature of the compounds involved. In this case, zinc (Zn) is more reactive than chromium (Cr) based on their positions in the activity series. Zinc displaces chromium in the reaction because it is higher in the series. Therefore, the reaction between zinc chloride and sodium chromate is reactive.
It's worth noting that "NaCl2" is not a valid formula. Sodium chloride is represented by NaCl, where there is only one chlorine ion (Cl-) per sodium ion (Na+).