Plant cells have plastids, cell wall, large and permanent vacuoles whereas animal cells don't
Answer:
1.06 × 10^5 J
Explanation:
We have to use the formula;
log(k2/k1) = Ea/2.303 ×R (1/T1 - 1/T2)
Given that;
k1 = 1.10 × 10-4 s-1
k2= 1.02 × 10-3 s-1
Ea=?
R=8.314 Jmol-1K-1
T1= 470. °C
T2= 510. °C
Hence;
log(1.02 × 10-3 s-1/1.10 × 10-4 =Ea/2.303 ×8.314(1/470 -1/510)
0.9672 = Ea/19.122(2.13 - 1.96) × 10^-3
0.9672= Ea/19.122(0.17) × 10^-3
0.9672= 1.7 ×10^-4 Ea/19.122
19.122 × 0.9672 = 1.74 × 10^-4Ea
Ea= 19.122 × 0.9672/1.74 × 10^-4
Ea= 18.495/1.74 × 10^-4
Ea= 1.06 × 10^5 J
Answer: Option (2) is the correct answer.
Explanation:
When for a particular compound a group of atoms shows certain characteristics reactions then that group is known as functional group.
Functional group of esters is "-COO".
Functional group of alcohols is "-OH".
Functional group of aldehydes is "-COOH".
Organic acids are the compounds that show acidic properties. Like
, -COOH etc.
Thus, we can conclude that the functional group —COOH is found in aldehydes.
The solubility equilibrium of PbCl
:
![PbCl_{2}(aq) Pb^{2+}(aq) + 2 Cl^{-}(aq)](https://tex.z-dn.net/?f=%20PbCl_%7B2%7D%28aq%29%20%3C---%3E%20Pb%5E%7B2%2B%7D%28aq%29%20%2B%202%20Cl%5E%7B-%7D%28aq%29)
![K_{sp}=[Pb^{2+}][Cl^{-}]^{2}](https://tex.z-dn.net/?f=%20K_%7Bsp%7D%3D%5BPb%5E%7B2%2B%7D%5D%5BCl%5E%7B-%7D%5D%5E%7B2%7D%20%20%20)
![[Cl^{-}] = 2.88 * 10^{-2} M](https://tex.z-dn.net/?f=%20%5BCl%5E%7B-%7D%5D%20%3D%202.88%20%2A%2010%5E%7B-2%7D%20M%20)
![[Pb^{2+}]=\frac{[Cl^{-}]}{2} = \frac{2.88 * 10^{-2}}{2}=1.44 *10^{-2}](https://tex.z-dn.net/?f=%20%5BPb%5E%7B2%2B%7D%5D%3D%5Cfrac%7B%5BCl%5E%7B-%7D%5D%7D%7B2%7D%20%3D%20%5Cfrac%7B2.88%20%2A%2010%5E%7B-2%7D%7D%7B2%7D%3D1.44%20%2A10%5E%7B-2%7D%20%20%20%20)
![K_{sp}=[Pb^{2+}][Cl^{-}]^{2}](https://tex.z-dn.net/?f=%20K_%7Bsp%7D%3D%5BPb%5E%7B2%2B%7D%5D%5BCl%5E%7B-%7D%5D%5E%7B2%7D%20%20%20)
= ![(1.44 * 10^{-2})(2.88*10^{-2})^{2}](https://tex.z-dn.net/?f=%20%281.44%20%2A%2010%5E%7B-2%7D%29%282.88%2A10%5E%7B-2%7D%29%5E%7B2%7D%20%20%20%20)
= ![1.19 * 10^{-5}](https://tex.z-dn.net/?f=%201.19%20%2A%2010%5E%7B-5%7D%20%20)
So, the corrected solubility product will be ![1.19 * 10^{-5}](https://tex.z-dn.net/?f=%201.19%20%2A%2010%5E%7B-5%7D%20%20)