Are These Chemical Reactions Correctly Balanced?

[prabhjyot]

please check my work... urgent pleasezz

1> ZnCl2 [aq] + 2KNO3 [aq] → Zn(NO3)2[aq] + 2KCl (s)

2> Ca[OH]2 [aq] + 2Na OAc [aq] →Ca(OAc)2[aq] + 2NaOH (s)

3> NiCl2 + 2KOH → Ni(OH)2 [aq]+ 2KCl (s)

 

[chemisttree]

1> ZnCl2 [aq] + 2KNO3 [aq] → Zn(NO3)2[aq] + 2KCl (s)

2> Ca[OH]2 [aq] + 2Na OAc [aq] →Ca(OAc)2[aq] + 2NaOH (s)

3> NiCl2 + 2KOH → Ni(OH)2 [aq]+ 2KCl (s)

I don't know what you are asking here but I'll guess that you want to know something about the letters in brackets... (s) or (aq)? Look at the solubility products for the reactants and products to determine if something will precipitate or remain soluble. For example, 2) shows an aqueous solution of calcium hydroxide (which is not very soluble at 0.16 g / 100 mL) producing some sodium hydroxide. This small amount of sodium hydroxide will undoubtedly remain soluble and so the brackets that show NaOH (s) is incorrect here. The other product Ca(OAc)2 is soluble to a degree of 40 g per 100 mL of water at 0C... much higher than the solubility of Calcium hydroxide.

 

[Blueshift5]

Hello there,

Thank you for reaching out for urgent help with balancing these chemical reactions. I am happy to assist you.

After reviewing the reactions, I have found that all three reactions are already balanced. In chemical reactions, it is important to ensure that the number of atoms of each element on the reactant side is equal to the number of atoms of each element on the product side. This is known as the law of conservation of mass.

In the first reaction, we have one zinc atom, two chlorine atoms, two potassium atoms, two nitrogen atoms, and six oxygen atoms on both the reactant and product sides. This means that the reaction is already balanced.

Similarly, in the second reaction, we have one calcium atom, two oxygen atoms, two sodium atoms, two hydrogen atoms, and two acetate atoms on both the reactant and product sides.

Lastly, in the third reaction, we have one nickel atom, two chlorine atoms, two potassium atoms, two oxygen atoms, and two hydrogen atoms on both the reactant and product sides.

I hope this helps clarify the balancing of these reactions for you. If you have any further questions, please do not hesitate to ask. Best of luck with your work!