The rate of a chemical reaction depends on several factors which include:
1) Concentration of the reactants
2) Pressure (in case of gases)
3) Temperature
4) Catalyst
As molecules approach each other, they collide forming a transition state which then unravels to form the product. As the temperature is lowered the frequency of molecular collisions gets reduced which causes the reaction to slow down.
Ans C) Lowering the temperature
Mol=M*vol(L)
Mol=5*(0.2) =1 mol
Mass=Mol*Molar mass
=1 * (7+19)
Mass = 26 grams
The pH of milk lowers as it turns into curd due to the formation of lactic acid.
Fresh milk is considered to be slightly acidic, having a pH lower than 7. Milk is converted into curd, the thickened or solid part of milk after the milk sours, through the process of fermentation. The lactic acid bacteria, such as Lactobacillus, converts lactose or the sugar present in milk into lactic acid, causing the milk to taste sour. The increase in the concentration of lactic acid results in the increase of hydronium ions which lowers the pH of the milk.
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Where's the list? It depends on which one it is. It could be Chlorine, silicon, or anything on the non metals side of the periodic table if you don't list it.