I will be indicating the questions which have been answered wrong.
49. a. ionises completely in aqueous solution (a buffer is a mixture of weak acid and a conjugate base or vice cersa that helps in maintaining slight pH changes. A strong acid however does not have this property can cannot maintain fluctuations of pH.)
50. e. NaOH (what you have indicated is an acid and the question asks for alkali i.e. base)
51. e. both donating H+ when base is added and accepting H+ when acid is added.
Being a buffer, this solution will balance the pH both in case an acid or a base is added to the buffer by donating or accepting the H ions.
All the other answers are correct. All the Best :)
hydrogen bonds b sonpolar covalent bond c. polar covalent bonds E. van der Waals interactions d....
14. When are atoms most stable? A) when they have the fewest possible yale (B) when they have the ma C) when all of the electron Orbit D) when all electrons are paired e the fewest possible valence electrons they have the maximum number of unpaired electrons in all of the electron orbitals in the valence shell are filled ods with 15. Water molecules can form hydrogen bonds with Acompounds that have polar covalent bonds B) compounds that have non-polar...
AJ by oxygen Donas Bjoy nyarogen bonas ionic bonds D) by nonpolar covalent bonds Coy E) by isotopes 29) Which answer below best describes H,0? A) Water molecule bonds are ionic bonds, in which electrons are gained and lost to create the bond. B) Water molecule bonds are oxygen bonds, in which oxygen atoms form bonds together. C) Water molecule bonds are polar covalent bonds, in which unequal sharing of electrons occurs. D) Water molecule bonds are nonpolar covalent bonds,...
For Numbers 16-19, choose one of the following choices e. covalent bond a. hydrogen bond 16. Which bond is the weakest type of bondi 17. Which type of bond is typically considered the strongest 18. Which bond shares valence electrons? 19. Which bond forms because of the gain or loss of valenc b, ionic bond e electrons that causes atoms to become ions? 20. A gecko lizard uses to stick to surfaces a a sticky slime b. its claws an...
5.. Why are some bonds considered polar covalent.. 6.. D efine hydrogen bond and the basis for its formation.. 7.. Can noncovalent bond interactions between large molecules in a cell be stable,, and why 8.. What are the biological ma cromolecules in a cell,, their function s , and what smaller molecules (ssubunits)) comprise them..
1) A hydrogen bond is A) an attraction between a hydrogen atom attached to N, O, or F and an N, O, or Fatom on anothe molecule. B) a covalent bond between H and O. c) an ionic bond between H and another atom. D) a bond that is stronger than a covalent bond. E) the polar O-H bond in water. 2) Which of the following molecules can form hydrogen bonds? A) CH4 B) NaH C) NH3 D) BH3 E)...
21) Which type of bond is the weakest bond between two atoms:A) ionic bondB) covalent bondD) nonpolar bondE) hydrogen bond22) Look at the reaction below, fill in the blank with the correct number in order to balance the reaction:\(6 \mathrm{CO} 2+6 \mathrm{H} 2 \mathrm{O} \rightarrow \mathrm{C} 6 \mathrm{H} 1206+\)A) 2B) 4C) 60223) Which of the following statements below concerning water is not correct?A) composed of polar molecules.B) responsible for most of the mass of humansC) with low heat capacity:D) may...
1. Why do ions like Na+ and Cl- tend to stick together? What kind of bond results from this force? 2. Why do the nuclei of an oxygen atom and two hydrogen atoms remain close together in the structure of a water molecule? What is more stable about a molecule of H2O than three separate atoms of O, H, and H? 3.How is the force holding the water molecule together different from an ionic bond? 4. What makes the covalent...
No need to show work 10) The HF bond can be classified as A) polar covalent B) nonpolar covalent C) ionic D) bent E) planar 11) Which is the most polar bond in the following list? A O-H B) S-O C) C-S D) I-I E) P-H 12) In the following list, which is the nonpolar molecule? A) H20 B) CCl4 C) HCI D) CH3F E) PC13 D) BF3 E) N2 13) In the following list, which is the polar molecule?...
SOLUTIONS 22. Non-polar compounds are soluble in ionic compounds b) electrolytes c) polar solvents d) non-polar solvents 23. Which of the following would increase the solubility of gaseous O2 in water? (there is more than correct answer, mark them all!) Decreasing the temperature of the solution Increasing the temperature of the solution Decreasing the pressure of the solution Increasing the pressure of the solution 24. Which of the following describes an unsaturated solution? A solution that has less than the...
General Chemistry II Part 3. Now let's consider the effect of structure on acid-base properties: There are two main factors that determine whether a molecule containing X-H bond will behave as a Bronsted-Lowry acid and donate a proton: the strength of the bond and the polarity of the bond. On one hand, the stronger the X-H bond, the lower the molecule's tendency to donate the proton. On the other hand, the more polar the X-H bond, the higher the molecules...