Acids/Bases

Indicators

Mole of acids, (n_a)

Mole of Bases (n_b)

Volume of Acids, Va (dm³)

Molar conc. of Acids (mol/dm³)

Mass Conc. of Bases (g/dm³)

Change in Colours

HCl/NaOH (0.05 M base)

Methyl orange

2

1

0.02257

0.0443

1.6172

Yellow to Orange

Hot Turmeric

2

1

0.02117

0.0472

1.7228

Yellow to green

Cold Turmeric Extract

2

1

0.02236

0.0447

1.6325

Light green to brown

H₂C₂O₄/2NaOH (0.05 M base)

phenolphthalein

1

2

0.01147

0.0436

2.7899

Pink to colourless

Hot Turmeric Extract

1

2

0.01353

0.0369

2.3599

Orange to light green

Cold Turmeric Extract

1

2

0.01267

0.0395

2.5296

Light green to yellow

2HCl/B₄Na₂O₇ (0.05 M Base)

Methyl Orange

2

1

0.02303

0.0868

6.3396

Yellow to orange

Hot Turmeric Extract

2

1

0.02307

0.0867

6.3287

Light brown to colourless

Cold Turmeric Extracted

2

1

0.02240

0.0893

6.5179

Light brown to colourless

2HCl/Na₂CO₃ (0.03 M Base)

Methyl orange

2

1

0.02703

0.0740

5.4014

Yellow to orange

Hot Turmeric Extract

2

1

0.02543

0.0787

5.7413

Yellow to light green

Cold Turmeric Extract

2

1

0.02613

0.0765

5.5874

Green to light yellow

H₂C₂O₄/2NaOH (0.03 M base)

Phenolpthalein

1

2

0.01423

0.0351

2.2490

Pink to colourless

Hot Turmeric Extract

1

2

0.01503

0.0333

2.1291

Orange to light green

Cold Turmeric Extract

1

2

0.01413

0.0354

2.2647

Light green to yellow