Answer:
6.3986g
Explanation:
The balanced chemical equation of this reaction is as follows:
Pb(NO3)2(aq) + 2KCl (aq) → PbCl2(s) + 2KNO3(aq)
In this equation, 2 moles of KCl solution will produce 1 mole of PbCl2.
To calculate the number of moles of PbCl2 produced, we use the formula:
Molarity = number of moles (n) ÷ volume (V)
0.101 = n/0.46
n = 0.046mol of KCl
If 2 moles of KCl solution will produce 1 mole of PbCl2
Then, 0.046mol of KCl will be react to produce (0.046 × 1/2) of PbCl2
0.046 × 1/2 = 0.023mol of PbCl2
To find the mass of PbCl2 using mole = mass ÷ molar mass
Molar mass of PbCl2 = 207.2 + 35.5(2)
= 207.2 + 71
= 278.2g/mol
0.023 = mass/278.2
mass = 6.3986g
