8. List the names of the basic anions, and explain how you know that they are ba

Question

8. List the names of the basic anions, and explain how you know that they are basic. Acid pH BasepH Unknown pH #1 #2 #3 #4 #5 #6 2.95 5.60 10.61 |10.64 2.19 9.02 HC 1.99 NaOH 12.00 H,SO4.78 KOH 12.00 NH, 10.61 HC,HO, 3.38 HF 2.64 Ca(OH), 12.30 HC,H,O, 2.95 (CH),NH 11.31 HNO,1.99 C,H,NH, 8.33 HCIo 2.19HONH 9.02 HNO2 2.71 Salt I pH SalI pH Sat pH NaC 7.00 KCI 7.00K,CO11.09 Na,PO 1.87 NaC.H,O?| 8.39 | | KC,H,O, | 8.39 | | NaHCO, | 9.18 NaHSO7.28 NH,NO, 5.60 NH,CI5.60 Na,SO7.00 K,SO4 7.00 NH,CH,O7.00 NaCN 10.64 KCN 10.64 NaNO, 7.00KNO, 7.00 NHF5.60 NaF 7.68 KF 7.68 (NH)SO,5.46

Explanation / Answer

basic anions : 1) CN- , 2) F- , 3) C2H3O2- , 4) HCO3- ,5) CO3-2 , 6) PO4-3

these compounds :

1) HCN

2) NaF

3) C2H3O2Na

4) NaHCO3

5) Na2CO3

6) Na3PO4

all these are formed from weak acid and strong bases . salt of weak acid and strong base will give pH more than 7 . because here anion participate in hydrolysis produce OH-

A- + H2O ---------------> HA + OH-

suppose :

F- + H2O --------------> HF + OH-

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