9.5 Eksperimen berkaitan kandungan Vitamin C di dalam Jus buah

Asid askorbik mengandungi....

• 0.1 g asid askorbik dalam 100 ml

• 0.01 g asid askorbik dalam 100 ml

• 0.1 g asid askorbik dalam 1000 ml

• 1 g asid askorbik dalam 100 ml

Kepekatan Vitamin C di dalam jus buah - buahan atau sayur - sayuran dikenalpasti menggunakan...

• Larutan DCPIP

• Air Suling

• Air Kapur

• Kertas Litmus

When oxidized, DCPIP solution is ________, when reduced, DCPIP solution is _______

• Blue, Colourless

• Colourless, Blue

• Orange, Colourless

• Purple, Colourless

The lower the volume of fruit juice used to decolourise DCPIP solution, the _______ the concentration of Vitamin C in the fruit juice

• Lower

• Higher

During the experiment, the DCPIP solution should not be shaken vigorously when the ascorbic acid and fruit juice are being added. Explain why?