A ALEKS . Corinne ventei , x G cnegg Study l Guided 5 R, Courses-3lackboard Le x

Question

A ALEKS . Corinne ventei , x G cnegg Study l Guided 5 R, Courses-3lackboard Le x . C Secure https:/ w ant ale com alekscgi/ ls exe/1o u g sl JBP3 H Ulki3 AV3mntst h4MRCL cuszkgsf UgX8q Ctml64yCnh VNsPXWfSy5xLtd3eBk6w -O AaDS AND BASES Corinne Predicting the qualitative acid-base properties of salts Consider the following data on some weak acids and weak bases acid hase name formula name formula HCH,CO1.8x 10 inel CH3NH2 4.4×10 dlo 10 niliuus dniline | C6H.NH. 4.3×10 Use this data to rank the following solutions in order of increasing pH. In other words, scloct anext to the solution that will have the lowest p, 2 next to the solution that wil have the next lowest pH, and so on solution pH choose onc choose onc choose onc 0.1 M KI 0.1 M CH NH3Ar 0.1 M K choose onc Check G:04 PM c @ " LEKS-Corinne Ve.

Explanation / Answer

KNO2 is the salt of weak acid and strong base . pH must be more than 7 . it will be highest pH

KI is the salt of strong acid and strong base so pH exactly 7 . next higherst pH

CH3NH2 is stronger base than aniline C6H5NH2 . so the salt from CH3NH2 also will have higher basic character

CH3NH3+ will be higher pH than C6H5NH3Cl

now order :

CH3NH3Br (lowest) <   C6H5NH3Cl < KI   < KNO2 (highest)

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