Question

A) Na0H + ? -> Na2C03 + ? б) Na0H + ? -> Zn(0H)2

Answer 1

A) 2NaOH+H2CO3=2H2O+Na2CO3
B) 2NaOH+ZnSO4=Na2SO4+Zn(OH)2

Answer 2

To balance the chemical equations, we need to determine the missing reactant and product. Let's solve each equation step-by-step:

A) NaOH + ? -> Na2CO3 + ?

The given reactant is NaOH (sodium hydroxide), and the products are Na2CO3 (sodium carbonate) and another unknown product. To balance this equation, we'll assume that the unknown reactant is CO2 (carbon dioxide) as it is commonly used to produce sodium carbonate.

The balanced equation is:

2 NaOH + CO2 -> Na2CO3 + H2O

B) NaOH + ? -> Zn(OH)2

The given reactant is NaOH (sodium hydroxide), and the product is Zn(OH)2 (zinc hydroxide). To balance this equation, we'll assume that the unknown reactant is ZnCl2 (zinc chloride).

The balanced equation is:

2 NaOH + ZnCl2 -> Zn(OH)2 + 2 NaCl

Please note that these assumptions were made based on common reactions involving the given reactants and products. Without more context or specific information, these are plausible balanced equations.