Answer:
The coefficient of H3PO4 is 1
Explanation:
The equation is H3PO4(aq) + NaOH (aq) → Na3PO4(aq) + H2O (l)
To balance the reaction, we first balance the Na atoms: On the right there are 3 Na atoms, so on the left we multiply NaOH by 3
The number of P atoms on the left is 1, the number of the P atoms on the right is also 1. So, this is already balanced.
On the left there are 6 H atoms, on the right we have 2H atoms, so e have to multiply H2O by 3.
On the left we have 7 O atoms, on the right, now we have also 7O atoms.
So this is already balanced.
The fully balanced reaction is H3PO4 (aq) + 3NaOH(aq) → Na3PO4(aq) + 3H2O(l)
The coefficient of H3PO4 is 1
Answer:
ΔG = -24.7kJ/mol
Explanation:
ΔG° of
Pb2+(aq) + 2Br-(aq) ⇄ PbBr2(s)
is:
ΔG° PbBr2 - (2*ΔG°Br- + ΔG°Pb2+)
-261.9kJ/mol - (2*-104.0kJ/mol + -24.4kJ/mol) =
-29.5kJ/mol
ΔG of the reaction is:
ΔG = ΔG° + RT lnQ
<em>Where R is gas constant (8.314x10⁻³kJ/molK)</em>
<em>T is absolute temperature (20°C + 273.15 = 293.15K)</em>
<em>Q is reaction quotient = 1 / [Pb²⁺][Br⁻]²</em>
<em />
Replacing:
ΔG = -29.5kJ/mol + 8.314x10⁻³kJ/molK*293.15K ln(1 / [Pb²⁺][Br⁻]²)
ΔG = -29.5kJ/mol + 8.314x10⁻³kJ/molK*293.15K ln(1 / [0.247M][0.758M]²)
<h3>ΔG = -24.7kJ/mol</h3>
<em />
Answer:
Explanation:
The best bet would just be to use filler questions, after all this is one of the least important parts.
Examples would be: Would blank melt ice faster because blank?
and so on