Select the statement that is incorrect. View Available Hint(s) Select the statement that is incorrect.
1 answer:
Answer:
(b). All carbohydrates have the general formula
Explanation:
Carbohydrates, more commonly known as sugars, are made up of carbon, oxygen, and hydrogen atoms. As mono-saccharide is known as the smallest unit of a carbohydrate . Two monosaccharides make up a disaccharide, and many monosaccharides make up a polysaccharide. Disaccharides and polysaccharides can be hydrolyzed back into the individual monosaccharide units.
As we know that the carbohydrate is always represented as
,
where n is any number between three and eight.
Hence, the option (b) is incorrect.
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Answer:
AgI, AgBr, AgCl and Ag₂CrO₄
Explanation:
Ksp (product solubility constant) is defined as the equilibrium constant of the general reaction:
XₐYₙ(s) → aXⁿ⁺(aq) + nYᵃ⁻(aq)
<em>Where X is cation and Y is anion.</em>
Ksp = [aXⁿ⁺]ᵃ [nYᵃ⁻]ⁿ
The presence of XₐYₙ(s) produce ax moles of aXⁿ⁺ and nx moles of Yᵃ⁻. <em>Where X is the solubility of the compound.</em>
Replacing in Ksp:
Ksp = [ax]ᵃ [nx]ⁿ
Solving for x, Solubility (S) is defined as:
For AgCl, Ag₂CrO₄, AgBr and AgI solubilities are:
= 1.34x10⁻⁵M
= 6.50x10⁻⁵M
= 7.35x10⁻⁷M
= 9.22x10⁻⁹M
The lower solubility is the first compound in precipitate, thus, order of precipitation is:
<em>AgI, AgBr, AgCl and Ag₂CrO₄</em>