c߿}DDˮx
֪Rc
ԓ}ͰˮxƽƄӼӋˮxĚxӻxӵĝȡҪµ֪RҎ
1. Kwc(H+) c(OH-)ˮc(H+)c(OH-)ˮԵġ
2. Jc(H+)c(OH-)10-7 molLpH7ҺһҺܰpH7ДһҺAԵķֽ羀^c(H+)c(OH-)ĴС
3. ֪ˮеc(H+)c(OH-)ܴ_ҺAȿ()ҺҲljA(A)Һ
4. ʲô|lԴˮxƽ⣿ƽƄ
(1) AԴˮxƽʹˮxƽƄc(H+)c(OH-)w½ҺpHֵʾc(H+)|ģͨ^ˮxӷe(Kw) ĹʽӋˮxc(OH-)wc(H+)wc(OH-)wAҺpHֵʾc(H+)tˮxc(H+)wAH+
(2) ˮ}ԴˮxƽʹˮxƽƄӣW ֻһNxˮtc(H+)c(OH-)pˮtȣҲܲˮԵ}ҺpHֵʾˮxc(H+)W(cAҺͬ)ˮʉAԵ}ҺpOHֵʾˮxc(OH-)W(cҺͬ)
(3) ضȿӰˮxƽˮxᷴضˮxƽƄWKWpHֵc(H+)wc(OH-)wؕrˮxӷe KW10-14100rKW10-12
6ژOϡAҺˮxɺҕc(H+)108 mol / L}JpH8teˣҺpHֵڳؕrС7ӋҺpHֵrҪ]ˮxc(H+)c(OH)Oˮxc(H+)c(OH)x mol / Ltˮxӷeɵó´ʽ(108x)x1014108xx21014xѺСˣx2СɺԲӋ108x1014x106ԓϡ}pH6
};
1ˮ2580rĚxӝǰɂĴС ( C )
A. B. C. С D. ܿ϶
2ҜpH12ijҺˮxc(OH-) ( CD )
A1.010-7 mol?L-1 B1.010-6 mol?L-1
C1.010-2 mol?L-1 D1.010-12 mol?L-1
3ˮx^̞H2OH+OH- ڲͬضƽⳣK(25)1.0l0-14K(35)2.1l0-14tД_ ( D )
A. c(H+)Sضȵ߶
B. 35rc(H+)c(OH-)
C. ˮxa(25)a(35)
D. ˮx
4ijضȕryüˮеc(H+)2.410-7 mol / Ltc(OH-) ( A )
A. 2.410-7 mol / L B. 0.110-7 mol / L
C. mol / L D. c(OH-)o_
5pH4FeCl3ҺpH10K2CO3Һˮxȷքea1a2tĴСPϵ ( C )
A. a1a2 B. a1a2 C. a1a2 D.oД
6ķNҺˮxɵĚxӝ֮(١âڡâۡâ) ( A )
pH0} 0.1 mol / L}
0.01 mol / LNaOHҺ pH11NaOHҺ
A. 1101001000 B. 011211
C. 14131211 D. 141323
790rˮxӷeKw3.810-13ԓضȕrˮpH ( B )
A. 7 B. С7 C. 7 D. o_
880rˮpHֵС7 ʲô
. ֪Ҝؕrˮеc(H+)c(OH-)10-7 mol / Lˮx(H2OH+OH-)ᷴʜضߵ80xʹc(H+)c(OH-)10-7 mol / LpH7(ֻضˮxĽo1ֻ֣c(H+)10-7 mol / LpH7ԓ}0)
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