ÌâÄ¿ÄÚÈÝ
ÖØË®D2OµÄÀë×Ó»ýΪ1.6¡Á10-15£¬¿ÉÒÔÓÃPHÒ»ÑùµÄ¶¨ÒåÀ´¹æ¶¨pD=-lgc(D+),ÒÔϹØÓÚpD
µÄÐðÊöÕýÈ·µÄÊÇ(¡¡¡¡ )¡£
µÄÐðÊöÕýÈ·µÄÊÇ(¡¡¡¡ )¡£
A£®ÖÐÐÔÈÜÒºÖÐPD=7 |
B£®ÔÚ1LD2OµÄÈÜÒºÖÐÈܽâ0.01mol NaOD£¨ÉèÈÜÒºµÄÌå»ýΪ1L£©£¬ÆäÖÐpD=12 |
C£®ÔÚ1L D2OÖÐÈܽâ 0.01mol DCl(ÉèÈÜÒºµÄÌå»ýΪ1L)£¬ÆäÖÐpD=2 |
D£®ÔÚ100mL 0.25mol¡¤L-1µÄNaODÖØË®ÈÜÒºÖмÓÈë50mL 0.2mol¡¤L-1DClµÄµÄÖØË®ÈÜÒº£¬ÆäpD=1 |
C
A´í£¬µ±ÖØË®D2OµÄÀë×Ó»ýΪ1.0¡Á10-14ʱ£¬ÈÜÒºÖÐPD=7²ÅΪÖÐÐÔÈÜÒº£»B´í£¬ÒòÖØË®D2OµÄÀë×Ó»ý²»ÊÇΪ1.0¡Á10-14£¬pD£¼12£»CÕýÈ·£»D´í£¬ÔÚ100mL 0.25mol¡¤L-1µÄNaODÖØË®ÈÜÒºÖмÓÈë50mL 0.2mol¡¤L-1DCl£¬·´Ó¦ºóÓàÏÂ0.015molNaOD£¬ÆäpDÒ»¶¨²»Îª1£»
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿