Answer:
Explanation:
The charges are as follows:
since oxidation number of lead is 2 as indicated lead (II)nitrite. The number in parentheses indicates the oxidation number.
bears the charge -1.
As lead bears 2 positive charges so we need two nitrite ions to form lead (II) nitrite.
, it is a halogen and bears the charge -1.
, it is an alkali metal.
Since Bromide bears -1 charge and potassium bears +1 charge so we need only 1 ion of bromide and 1 ion of potassium to form potassium bromide.
Similarly, to form lead bromide we need 2 ions of bromide and 1 ion of lead, and to form potassium nitrite we need 1 nitrite ion and 1 potassium ion.
The final balanced equation is as follows, the various states of reactants and products are also written properly.
The mass of that will be required to be dissolved in water would be 15.9 grams
<h3>Solution preparation</h3>
Recall that: molarity = mole/volume in L
In this case, the volume is 0.3 L and the molarity is 0.5 M.
Thus, mole = molarity x volume = 0.5 x 0.3 = 0.15 moles
Mass of 0.15 moles = 0.15 x 106 = 15.9 grams
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Answer:
3. Blue I think
4. Exothermic
5. A reversible reaction is when the products can change back into their original reactants.
Answer:
The balanced chemical reaction is as follows.
Explanation:
Balanced chemical reaction has equal number of atoms in reactant side and product side.
<u>Reactant side</u> <u> Product side</u>
Number of sodium atoms -1 Number of sodium atoms -1
Number of hydrogen atoms -5 Number of hydrogen atoms -5
Number of carbon atoms -3 Number of carbon atoms -3
Number of oxygen atoms-5 Number of oxygen atoms-5
<u>Reactant side </u> <u> Product side</u>.
Number of hydrogen atoms -2 Number of hydrogen atoms -2
Number of carbon atoms -1 Number of carbon atoms -1
Number of oxygen atoms -3 Number of oxygen atoms -3