The pH of a 0.1 mol dm-³ solution of a weak acid with a Ka = 10.⁹ will be... (a) 2.5 (b) 5 (c) 10 (d) 1 Which pair of compounds are isomers? (a) (b) (c) (d) 2-methylpentanol and 2,2-dimethylbutanol methanoic acid and ethanoic acid methanol and methanal ethane and ethanol
Carbohydrates
Carbohydrates are the organic compounds that are obtained in foods and living matters in the shape of sugars, cellulose, and starch. The general formula of carbohydrates is Cn(H2O)2. The ratio of H and O present in carbohydrates is identical to water.
Starch
Starch is a polysaccharide carbohydrate that belongs to the category of polysaccharide carbohydrates.
Mutarotation
The rotation of a particular structure of the chiral compound because of the epimerization is called mutarotation. It is the repercussion of the ring chain tautomerism. In terms of glucose, this can be defined as the modification in the equilibrium of the α- and β- glucose anomers upon its dissolution in the solvent water. This process is usually seen in the chemistry of carbohydrates.
L Sugar
A chemical compound that is represented with a molecular formula C6H12O6 is called L-(-) sugar. At the carbon’s 5th position, the hydroxyl group is placed to the compound’s left and therefore the sugar is represented as L(-)-sugar. It is capable of rotating the polarized light’s plane in the direction anticlockwise. L isomers are one of the 2 isomers formed by the configurational stereochemistry of the carbohydrates.
![The pH of a 0.1 mol dm-3 solution of a weak acid with a Ka = 10⁹ will be...
(a)
2.5
(b)
5
(c)
10
(d)
1
Which pair of compounds are isomers?
(a)
(b)
(c)
(d)
2-methylpentanol and 2,2-dimethylbutanol
methanoic acid and ethanoic acid
methanol and methanal
ethane and ethanol](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7e730677-955c-4440-880e-72eb8f22dfd7%2F89c88828-34f4-499a-8a7f-99a4e64c530d%2Fx4fxdhp_processed.jpeg&w=3840&q=75)
![The following kinetic energy diagrams represent four different reactions, all carried
out at 50°C, with different activation energy thresholds (represented by the vertical
dashed lines). Which reaction would likely have the fastest rate?
(a)
E.
Reaction A at 50°C
Number of
Particles
in
Kinetic Energy
Reaction B at 50°C
Number of
Particles
Kinetic Energy
E,
Reaction C at 50°C
Number of
Particles
ис
na
N
Kinetic Energy
Reaction D at 50°C
Number of
Particles
Kinetic Energy
(b)
(c)
(d)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7e730677-955c-4440-880e-72eb8f22dfd7%2F89c88828-34f4-499a-8a7f-99a4e64c530d%2Fgg92na_processed.jpeg&w=3840&q=75)
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