已知反应2X+3Y→2Z,则用不同物质浓度变化表示的反应速率之间关系正确的是( )。
A: v(X)=3v(Y)/2;
B: v(Z)=2v(X)/3;
C: v(Z)=v(Y)/3;
D: v(Y)=3v(X)/2;
A: v(X)=3v(Y)/2;
B: v(Z)=2v(X)/3;
C: v(Z)=v(Y)/3;
D: v(Y)=3v(X)/2;
举一反三
- 3、反应X+2Y→Z是一个2.5级反应,下面的速率方程式中,可能正确的是..(A)v=kc(X)[c(Y)]2;(B)v=kc(X)[c(Y)]3/2;(C)v=k[c(X)]2c(Y);(D)v=k[c(X)]0[c(Y)]2 A: (A) v = k c (X)[c (Y)]2; B: (B) v = k c (X)[ c (Y)]3/2; C: (C) v = k[c (X)]2 c (Y); D: (D) v = k [c (X)]0[ c (Y)]2
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- 设\(z = u{e^v}\),\(u = {x^2} + {y^2}\),\(v = xy\),则\( { { \partial z} \over {\partial x}}=\) A: \({e^{xy}}({x^2}y + {y^3} + 2x)\) B: \({e^{xy}}({x}y^2 + {y^3} + 2x)\) C: \({e^{xy}}({x}y + {y^3} + 2x)\) D: \({e^{xy}}({x^2}y + {y^2} + 2x)\)
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