Question 12 What is the number of the central nitrogen atoms a. 4 b. 3 c. 6 d. 2

Question

Question 12 What is the number of the central nitrogen atoms a. 4 b. 3 c. 6 d. 2 e. 5 Which one of the following statements regarding a weak acid is NOT correct? a. A weak acid has a very low concentration. b. A weak acid ionizes in water to produce hydronium ions. c. A weak acid neutralizes bases. d. A weak acid ionizes only to a small extent in water. e. Acetic acid is an example. Ion-dipole forces always require a. an ion and a water molecule. b. an anion and a polar molecule. c. a polar and a nonpolar molecule d. a cation and a water molecule e. an ion and a polar molecule A. homogeneous mixture of two or more substances is called ___ a. a solution. b. a mass c. a solvent d. an electrolyte e. a compound.

Explanation / Answer

Ans 10 false statement

weak acid has a very low concentration. Weak acid can have any concentration from low to high. They are called weak acid because of their low dissociation.

Ans 11.Ion dipole require always require

ans (e) an ion and a dipole (example Na+ interact with H2O due to ion dipole force of attraction.

Ans 12. Homogeneous mixture of two or more substance are called

Solution. ( A solution always have homogeneous mixture and if it is not homogeneous then it is not called a solution, it may be colloid, suspension etc.)

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