Answer:
A.
Explanation:
For a process that occurs at constant temperature and pressure, spontaneity can be determined using the change in Gibbs free energy, which is given by:
ΔG = ΔH - TΔS. A process is spontaneous if ΔG≤O.
Even so the enthapy of the dissolution is positive the factor -TΔS will produce a negative ΔG value. As ΔS is relatived to the disorder of a system, a increase in this value (ΔS ) upon dissolution will made the dissolution process spontaneous.
Precipitate is silver sulfate and the net ionic equation is
2Ag⁺(aq) + SO₄²⁻(aq) → Ag₂SO₄(s)
<u>Explanation:</u>
The given reaction is the reaction of sodium sulfate with silver nitrate and as the reaction goes we will get the precipitate of Silver sulfate and the balanced reaction is given as,
Na₂SO₄ + 2 AgNO₃→ Ag₂SO₄↓ + 2 NaNO₃
Here silver sulfate is obtained as a precipitate.
Net ionic equation is the equation in which the ions involved in the reaction only taken into account that is ions forming precipitate, whereas the other ions are considered as spectator ions, ions do not involved in the reaction.
Here the net ionic equation is:
2Ag⁺(aq) + SO₄²⁻(aq) → Ag₂SO₄(s)
Answer:
78.15 g
Explanation:
Number of moles of C₇H₆O₃ that reacted = mass/molar mass = 57.6g/126 gmol-1
Number of moles of C₇H₆O₃ = 0.457 moles of C₇H₆O₃
From the reaction equation;
1 mole of C₇H₆O₃ yields one mole of aspirin
0.457 moles of C₇H₆O₃ yields C₇H₆O₃ of aspirin
Hence theoretical yield of aspirin = 0.457 moles × 180 gmol-1 = 82.26g of aspirin
% yield = actual yield/theoretical yield ×100
Actual yield= % yield × theoretical yield/100
Actual yield = 95.0 × 82.26/100
Actual yield = 78.15 g
The graph of the relationship between the volume and temperature of an enclosed gas is ; ( A ) It is a straight line with a positive slope showing that an increase in temperature results in an increase in volume
According to Charlies' law at constant pressure, the volume of a gas ( enclosed gas ) is directly proportional to it's temperature ( kelvin temperature ) given that the amount of the enclosed gas is kept constant.
Therefore the graph showing the relationship between the volume and temperature will be an straight line and the slope will be a positive slope.
Hence we can conclude that The graph of the relationship between the volume and temperature of an enclosed gas is a straight line with a positive slope showing that an increase in temperature results in an increase in volume
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<u>1 mole of oxygen.</u>
Answer:
solution given:
![2Na+O_2=Na_2O_2\\2mole\:\: 1mole \:\: 1mole](https://tex.z-dn.net/?f=2Na%2BO_2%3DNa_2O_2%5C%5C2mole%5C%3A%5C%3A%201mole%20%5C%3A%5C%3A%201mole)
according to the above reaction,1 mole of oxygen is required to react with 2 moles of sodium to form sodium peroxide.
Explanation: