NaCl doesn't react with KNO3.
NaCl + AgNO3 = NaNO3 + AgCl(s)
NaOH + HCl = NaCl + H2O
Na2CO3 + 2 HCl = 2NaCl + CO2 + H2O
BaCl2 + H2SO4 = BaSO4(s) + 2 HCl
CuSO4 and Zn(NO3)2 doesn't react.
Is Zn(NO3)2 is soluble or insoluble?The answer is soluble, it can dissolve in water.In general, simple metal nitrates are almost always soluble.
The answer is to do with electronegativity difference. Metals generally have low values and non metals higher values. When an element with a low value combines with an element with a high value, usually the element with the low value LOSES electrons to form a positive ion while the other element gains the electron(s) and forms a negative ion. So an ionic compounds is formed. Compoiunds of this type usually contain a metal elements joined to non-metal element - so compounds 2 and 3 in your list are ionic. When the compound is made from only non-metal elements, electrons are not lost or gained but shared as these elements tend not to lose electrons or gain them. Instead they share electrons to make covalent bonds. If the result are small structures they will be molecular eg 1 and 4 in your list.
zinc nitrate
The zinc nitrate solution is acidic.
This compound is zinc nitrate.
Is Zn(NO3)2 is soluble or insoluble?The answer is soluble, it can dissolve in water.In general, simple metal nitrates are almost always soluble.
1 atom of Zn (zinc) + 2 atoms of N (nitrogen) + 6 atoms of O (oxygen) = 9 atoms in 1 molecule of Zn(NO3)2.
The answer is to do with electronegativity difference. Metals generally have low values and non metals higher values. When an element with a low value combines with an element with a high value, usually the element with the low value LOSES electrons to form a positive ion while the other element gains the electron(s) and forms a negative ion. So an ionic compounds is formed. Compoiunds of this type usually contain a metal elements joined to non-metal element - so compounds 2 and 3 in your list are ionic. When the compound is made from only non-metal elements, electrons are not lost or gained but shared as these elements tend not to lose electrons or gain them. Instead they share electrons to make covalent bonds. If the result are small structures they will be molecular eg 1 and 4 in your list.