对斐林试剂和双缩脲试剂的叙述正确的是( )
A.都含有Cu(OH)2溶液和Na2SO4溶液 |
B.斐林试剂配制是将4-5滴5g/mL CuSO4溶液滴入2mL0.1g/mL的NaOH溶液中 |
C.双缩脲试剂是将 3-4滴0.01g/mL CuSO4溶液滴入2mL0.1g/mL的NaOH溶液中混合而成 |
D.双缩脲试剂含两种试剂:0.1g/mL的NaOH溶液和0.01g/mL CuSO4溶液 |
对斐林试剂和双缩脲试剂的叙述正确的是( )
A.都含有Cu(OH)2溶液和Na2SO4溶液 |
B.斐林试剂配制是将4-5滴5g/mL CuSO4溶液滴入2mL0.1g/mL的NaOH溶液中 |
C.双缩脲试剂是将 3-4滴0.01g/mL CuSO4溶液滴入2mL0.1g/mL的NaOH溶液中混合而成 |
D.双缩脲试剂含两种试剂:0.1g/mL的NaOH溶液和0.01g/mL CuSO4溶液 |