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The table below shows the change of temperature(θ) when silver(I) nitrate and sodium chloride solution of different volume are mixed together.
Reactants | θ(oC) |
Silver(I) nitrate solution, 25cm³, 0.5mol/dm³ Sodium chloride solution, |
x |
Silver(I) nitrate solution, 100cm³, 0.5mol/dm³ Sodium chloride solution, |
y |
Which of the following is true about the value x and y?
The table below shows the change of temperature(θ) when silver nitrate react with different chloride solution.
.
Reactants | θ(oC) |
Silver(I) nitrate solution, 25cm³, 0.5mol/dm³ Sodium chloride solution, |
x |
Silver(I) nitrate solution, 25cm³, 0.5mol/dm³ Potassium chloride solution, |
y |
Which of the following is true about the value x and y?
The following thermochemical equation shows the formation of lead (II) iodide.
Pb²⁺ + 2I- → PbI₂ ∆H = -y kJ/mol
The -y kJ/mol is called the heat of
The energy change during the precipitation of calcium sulphate is shown in the equation below:
Ca²⁺ + SO₄²⁻ → CaSO₄ ∆H = -1435.5 kJ/mol
What is the energy change when 400cm³ of calcium chloride, CaCl₂, 0.5 mol/dm³ reacts with 200cm³ of ammonium sulphate , (NH₄)₂SO₄, 0.5 mol/dm³.
The diagram above shows the energy level for the precipitation of silver chloride. Calculate the heat released when 42.6g of silver chloride is formed. [Relative atomic mass: Cl = 35.5, Ag = 108]
When 50cm³ of 1.0 mol/dm³ sodium chloride solution is mixed with 50cm³ of 1.0 mol/dm³ silver nitrate solution, the temperature of the mixture increase by 5°C. Which of the following solution can be used to replace sodium chloride solution to get the same rise in the temperature
Which of the following is not correct about the heat of precipitation?
The table below shows the change of temperature(θ) when silver(I) nitrate and sodium chloride solution of different concentration are mixed together.
Reactants | θ(oC) |
Silver(I) nitrate solution, 25cm³, 0.5mol/dm³ Sodium chloride solution, |
x |
Silver(I) nitrate solution, 25cm³, 1.0mol/dm³ Sodium chloride solution, |
y |
Which of the following is true about the value x and y?