Terry, a student, performs a titration. he completes these steps as part of his titration procedure: 1. he cleans and rinses a burette with standardized base. 2. he fills the burette with standardized base solution. 3. he reads and records the initial burette volume. 4. he adds a base from the burette to an acid. 5. he observes a color change in the erlenmeyer flask. 6. he stops the addition of base from the burette. 7. he reads and records the final burette volume. which steps will provide information needed to calculate the volume of base needed to reach the equivalence point? 1 and 6, 3 and 7, 3, 4, and 6, or 1, 2, and 7?

The correct answer is option B, 3 and 7

Explanation:

The logic is very simple

Let the initial volume of burette with standardized base solution ----------------Step (7)

Thus,  the  amount of base added to an acid

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.