KOH titration Acid-base titration
John performs an acid-base titration. After he dispenses 43 milliliters of potassium
hydroxide into a flask containing 20. milliliters of nitric acid of an unknown molar
concentration, the indicator turns blue and the endpoint is obtained. The molar
concentration of the potassium hydroxide is 0.20-molar.
7
Which substance is the titrant.

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

the answer is b. dilution

where are the choice options?