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Starch does react with water it undergoes a hydrolsis reaction. Starch is composed of 2 different polymers - amylose and amylopectin, however for the reaction to occur you need the enzyme amylase - it breaks down amylose alot more efficiently than amylopectin but it will breakdown amylopectin.
amylose + (n-1) H2O --(Amylase)--> n Alpha Glucose
To break down starch in the lab - without enzymes I assume a concentrated acid catalyst (HCl or H2SO4) under reflux will most likely break it down however i'm not 100% because the connection between the glucose molecule is an ether group not an ester or amide. You'd have to try it yourself to confirm.
* You may have to reflux it though for 24hrs because you do for amides, and i'm pretty positive alkaline hydrolysis will not work.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoBecause there is nothing in starch for it to react with water. Water is neutral, not an acid or a base, therefore I can only think that starch would react with an acid, but I do not think it will.
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What does insolute mean?
It means a chemical/ substance, that cannot be dissolved in a liquid. An example would be starch and water, as starch is insolute when added to water.
Why doesnt super glue stick to the packet?
Because it has to react with oxygen in the atmosphere to harden.
What is the color of potato cell if added with iodine solution?
iodine is an indicator for starch, potatoes are basically starch storage organs for potato plants. that's why they are good to eat, mmm starch!
Starch is dissolved in which solvent?
Cold water. It is only slightly soluble in hot water. It is partially soluble in some organic liquids such as methanol and acetone.-----------------------------------N-methyl morpholine N-oxide (NMMO) is direct solvent for cellulose and other polysaccharides such as starch.
How does the shape of water affect its behavior?
water doesnt have a shape
How does copper react in water?
It doesnt
Does hot water react with aluminum?
No, hot water doesnt go through the foil
Will corn starch react with vinegar?
no
Why does iodine react with sugar?
Iodine does not react with sugar, it reacts with starch.
What substances in the bond paper does the iodine painted on the skin react?
starch starch
What does not have the affinity for water?
There are some metals which do not react with water. Metals like Silver,Gold,Platinum,copper,Mercury and non metals like Hydrogen do not react with water.
With what substance in bond paper does the iodine painted on the skin react with?
glue, tape, staples, paperclips, and sometimes the sap of trees.
What parts of a leaf does not react to iodine?
then starch is not present...
A metal used for piping because it doesnt react with water is?
Examples: lead, stainless steel, sometimes copper.
Hydrogen and chlorine react?
water; air && fire; Florine;
What happens to starch in a cracker when it react with saliva?
The enzymes in the saliva help break down the starch in the cracker.
What happens when glucose and starch react together?
They are the same: starch is the form in which glucose is stored. So nothing happens.
