Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter21: The Chemistry Of The Main Group Elements
Section: Chapter Questions
Problem 86GQ: In 1774, C. Scheele obtained a gas by reacting pyrolusite (MnO2) with sulfuric acid. The gas, which...
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Q 21 please
Transcribed Image Text:Q19. Select
The element that has the smallest density, Na, Li, Rb, Sr
The strongest base that can exist in liquid acetic acid CH3COO-¹
------- The species that colorize the alkali metal ammonia solution, NaNH₂ Na' (NH₂) (NH
- The most abundant isotope, 'H, 2D., ³T
------ The element with greater tendency to catenate, N, C, Sn, Pb
The carbon allotrope that is electric conductor, graphite, diamond, graphene
--------The hardest Lewis acid, BF3, BBr3, BC13, B13
The compound with strongest basic character, NI3, NC13, NBr3, NF3
- The element that has the largest charge density, K, Be, Ca, Ba
The highest central bond angel, NH3, PH3, ASH3, SbH3
Q20. Determine the direction of the reaction. (draw an arrow to show the real direction)
A. Bal2 + PbCl₂
BaCl2 + Pbl2
B. CH3Cdl + NaCl
C. RPBBr3+ RNBF3
D. AgF+ Nal
CH3CdCI+Nal
RPBF3 + RNBBr
Agl + NaF
Q21. Compare graphite and diamond
Q22. Explain
A. BF3 is a weaker Lewis acid than BCl3?
B. The structure and reactivity of B₂H6 is different from C₂H6
C. The inert pair effect
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