<h3><u>Answer and explanation</u>;</h3>
- To balance the charges of ions the number of electrons lost is equal to the number of electrons gained. The overall net charge must be zero.
- The number of ions needed to accomplish this is represented by the subscripts.
- For any given ionic compound, the product of the charge on the ion (or multiatomic ionic group) times the subscript of the ion will give a total charge of zero when all ions are considered.
For examples: NaCl Na = +1 Cl = -1 total is zero
We can see from the chemical formula of magnesium hydroxide that each mole contains 2 moles of OH ions. So the molar ratio of magnesium hydroxide to hydroxide ions becomes 1 : 2.
If there are 2.5 moles magnesium hydroxide present, the moles of hydroxide ions will be:
2.5 * 2 = 5 moles of hydroxide ions
Each mole of a substance contains 6.02 x 10²³ particles. Thus, the total number of ions will be:
5 x 6.02 x 10²³
= 3.01 x 10²⁴ hydroxide ions
Answer:
Pb(NO3)2 + 2NaCl = 2NaNO3 + PbCl2
Answer: an ionic compound
Explanation: