5- A water sample has a total alkalinity of 220 mg/l and has a pH of 7.4. The maximum amount of calcium ion is found when the solubility product of CaCO3, K, = [Ca"I [CO,]= 4.57x10", is met. For natural water, %D Talk+[H*]-k/[H*] [HCO, ]= 1+2k, /[H*] Talk+[H]-k,[H*] 2(1+[H*/2k,) kw= [H'] [OH] k2= [H'] [CO,"] /[HCO,]= 4.69x10" [CO, = Calculate the maximum amount of calcium ion in mg/l as CaCO3 that could be contained in a solution at equilibrium at 25 °C.
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.
![5- A water sample has a total alkalinity of 220 mg/l and has a pH of 7.4. The maximum
amount of calcium ion is found when the solubility product of CaCO3, K, = [Ca I
[CO, ] = 4.57x10", is met. For natural water,
Talk+[H*]-k,/[H*]
1+2k, /[H*]
Talk+[H ]-k,MH*]
2(1+[H*V2k;)
kw= [H*] [OH]
k2= [H'] [CO,"] /[HCO,]=4.69x 10"
[HCO, ]=
[CO, ]=
Calculate the maximum amount of calcium ion in mg/l as CaCO3 that could be
contained in a solution at equilibrium at 25 C.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff3a58790-c56a-4c8c-9d64-507752e78b1c%2Fe01251c5-0d8e-4c9e-b412-811a83d04fd2%2Fnn5yo1u_processed.jpeg&w=3840&q=75)
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