Gastric acid plays a key role in the digestion of proteins by activating digestive enzymes and often has a pH value in the range
1 answer:
If the pH of the acid at a given time is found to be 1.25, then the molarity of the gastric acid juice is 0.056M.
<h3>What is pH?</h3>pH is define as the negative logarithm of the concentration of H⁺ ions present in any solution and it will be represented as:
pH = -log[H⁺]
Concentration will be present in the form of molarity and pH value for gastric acid is given 1.25 means it is strong acid as it completely dissociates into their ions.
Required equation for calculation will be:
[H⁺] =
[H⁺] =
[H⁺] = 0.056 M
Hence molarity of the gastric acid juice is 0.056M.
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Answer:
a. fluorine
Explanation:
Fluorine is the element of group 17 and period 2. The electronic configuration of the element is .
Stable oxidation state = -1 of fluorine as it gains one electron to gain noble gas configuration.
With alkali metals, which have oxidation state of +1 form ionic compound of the form, MX where X is F.
Among the halogens, fluorine forms the most stable halide because of the comparable size of the hydrogen and fluorine. Thus, it is the weakest acid when compared with other hydrogen halides.
Fluorine is the most reactive in the halogen series and thus, combines with most of the elements.
Fluorine forms inter-halogen compounds of form XA only. Example - ClF.
Hence, option a is correct.