How to find the pH? Ice chart .. etc?

What is the pH of a 0.42 M ascorbic acid? What would be the color of methyl orange in this solution?

Need for example, Ka data for ascorbic acid concentration to develop. Finally require similar data for the indicator

Wilton 601-5580 1/2-Ounce Certified-Kosher Icing Colors, Set of 12 $8.49 Get exactly the right shades of practically any color with these concentrated icing colors. Your cakes will be the talk of the party and your creativity will know no bounds….

Ateco Food Coloring Kit, 6 colors $6.95 Cake decorators will love this alternative to coloring drops and pastes. This gel is formulated with the necessary die concentration levels needed to achieve the most vibrant and brilliant colors available. Gel colors have a viscosity that offers the convenience of a pourable product, while making it easy to duplicate shades. Happily, gel color will not breakdown buttercream or non dairy icings as…

Americolor Soft Gel Paste Student Kit- Culinary Academy 1st Choice! $19.16 Each kit contains one .75 oz bottles of each of the following 12 colors: Super Black, Royal Blue, Sky Blue, Chocolate Brown, Lemon Yellow, Teal, Leaf Green, Orange, Deep Pink, Super Red, Violet and Fuchsia…