Adiabatic.
In thermodynamic chemistry, an adiabatic process is defined as the process in which there is no transfer of heat and mass takes place between system and surroundings. The energy will transfer only in the form of work. The condition is expressed as q=0, which means no heat is transferred. It has various applications in the study of thermodynamics reactions.
Answer:
The balloon becomes inflated
Explanation:
The equation of the reaction between baking soda (sodium bicarbonate) and vinegar(ethanoic acid) is shown below;
NaHCO3 + HC2CH3O2 ------> NaC2H3O2 + H2O + CO2
The gas (CO2) evolved in the process leads to the inflation of the balloon dropped on the bottle in which the reaction is taking pace.
This observation provides evidence that a gas was really evolved in the reaction.
Answer: 4.544 grams of chlorine gas is produced in the given reaction.
Explanation: Number of moles can be calculated by using the formula:
... (1)
Molar mass of NaCl = 58.5 g/mol
Given mass of NaCl = 7.5 grams
Moles of NaCl is calculated by:
![Moles=\frac{7.5g}{58.5g/mol}](https://tex.z-dn.net/?f=Moles%3D%5Cfrac%7B7.5g%7D%7B58.5g%2Fmol%7D)
Moles of NaCl = 0.128 moles
The given equation is not balanced. For any further calculation, we first need to balance the equation.
The balanced chemical equation follows:
![2NaCl+2H_2O\rightarrow 2NaOH+Cl_2+H_2](https://tex.z-dn.net/?f=2NaCl%2B2H_2O%5Crightarrow%202NaOH%2BCl_2%2BH_2)
By Stoichiometry,
2 moles of NaCl produce 1 mole of chlorine gas
So, 0.128 moles of NaCl will produce =
= 0.064 moles of chlorine gas
Mass of Chlorine gas is calculated by using equation 1, we get
Molar mass of
= 71 g/mol
Putting the values in above equation, we get
![0.064mol=\frac{\text{Given mass}}{71g/mol}](https://tex.z-dn.net/?f=0.064mol%3D%5Cfrac%7B%5Ctext%7BGiven%20mass%7D%7D%7B71g%2Fmol%7D)
Mass of
produced = 4.544 grams
Answer:
K= -0.286 Mol^-1.S^-1
Explanation:
FIRSTLY, WE WRITE A CHEMICAL REACTION EQUATION FOR THE REACTION BETWEEN OXALIC ACID AND POTASSIUM PERMANGANATE.
KMnO2(aq) + H2C2O4(aq) ----> Mn2+(aq) + CO2(g) + H2O(l)
(purple) (colorless)
THE RATE OF THE REACTION IS MEASURED AND MONITORED BY CHECKING FOR THE DISAPPEARANCE OF THE PURPLE COLOR OF THE POTASSIUM PERMANGANATE.
The rate of the reaction is given by : -Δ[KMnO4]/ΔT = -Δ[ H2C2O4]/ΔT = Δ[ Mn2+]/ΔT
When all of the purple color is gone, we can say that the reaction is finished and that the final concentration of the KMnO4 is now zero. Since the initial time for ΔT is zero, the equation for the rate of
disappearance of the potassium permanganate becomes:
Rate = Δ[KMnO4]/ΔT= (0-[initial KMnO4]) ÷ (elapsed time -0) = [Initial KMnO4 ] ÷ elapsed time
Hence, the rate of the chemical reaction is thus;
-1.3/5 = -0.26M/s
Now, to get the rate constant for the reaction, we need to know the rate law and this can be expressed as follows:
For a reaction A+B---> C The general rate law would be: Rate = k[A]^m[B]^n
In this particular case,
Rate =k [KMnO4][ H2C2O4]
Kindly note that m and n in this case is 1 each. We have calculated our rate from above. Hence:
-0.26 = k(1.3)(0.7)
k = -0.26÷(1.3)(0.7)
K= -0.286 Mol^-1.S^-1
Answer:
i believe its They may feel dizzy because the heart pumps more blood per beat on Earth than in space.
Explanation: