## What is the rate law for the reaction of bleach with dye?

By running the bleaching reaction with a large excess of bleach, OCl– , the Δ[OCl–] will be approximately equal to zero, therefore, k′ = k[OCl–] and the rate law simplifies to: rate = k′[red dye]a and the rate of reaction leads directly to the order with respect to red dye, a.

How does bleach affect different dyes?

Chemical compounds — called chromophores — cause colors by reflecting a certain portion of the visible spectrum of light. The oxygen molecules released by bleach break up the chemical bonds of chromophores. The changed chromophore molecules either reflect no color or a color outside the visible spectrum.

What is the absorbance of bleach?

1.00 M
– The actual concentration of the dye solution can be calculated using the molar absorptivity of the dye where ε = 130,000 L∙cm-1∙mol-1. – The concentration of the bleach solution can be estimated as 1.00 M.

### What happens to the reaction time as the concentration of bleach increases?

The order of the reaction, n and m above, with respect to the concentrations of the reactants. The rate is proportional to the concentration raised to the “order”. For first order, the rate is proportional to concentration raised to the first power, so doubling the concentration doubles the rate.

What reacts with bleach and turns red?

Well water and liquid bleach are just not very compatible. The sodium hypochlorite active in liquid bleach reacts with the iron and changes it to the chemical form as rust. This new yellow/red discoloration then deposits on clothes, and after drying has essentially dyed the clothes.

What does it mean when bleach turns blue?

Any residual blue color left after this process, is concentrated brightener that reflects light off the fabric in the blue spectrum. No color change means the item can be safely bleached.

## How does bleach work reaction?

Bleaches work by reacting with many colored organic compounds, such as natural pigments, and turning them into colorless ones. While most bleaches are oxidizing agents (chemicals that can remove electrons from other molecules), some are reducing agents (that donate electrons).

What are possible sources of error in the kinetics of a bleach reaction experiment?

Through a combination of in silico synthetic data simulations and laboratory experimentation, we report on five potential sources of error: (1) the kinetic flooding approximation, (2) solution concentration mistakes, (3) signal processing, (4) spectrometer limitations, and (5) particulates in the solution.

Why are dyes Coloured give a possible explanation why the colour disappears when a dye reacts with hypochlorite?

Bleach contains sodium hypochlorite, which is an oxidizer. It oxidizes or reacts with the chromophore or color molecules in food coloring. Although the pigment molecule remains, it’s shape changes so that it can’t absorb/reflect light the same way, so it loses its color as a result of the chemical reaction.

### Does bleach turn things pink?

There is a chemical reaction between the chlorine and sunscreen. Per thread you are not alone – www.styleforum.net/…/bleach-turned-a-white-shirt-pink… On recommend there said, try soaking your shirts in bleach for longer. Soaked the bright pink shirt in a warm solution for 15 mins and it went white again!

Why would bleach turn red?

The chlorine element in a classic chlorine-based bleach oxidizes the iron from the porcelain. Oxidized iron is rust, hence the rusty red color.

What color will bleach turn?

Red will usually turn pink, sometimes white. Orange most often ends up a lighter shade of orange. Yellow will usually turn white. Greens will turn a light yellowish green or white.

## What is the rate of bleaching reaction of red dye?

(red dye) (bleach or OCl–) The rate of the bleaching reaction is dependent on the concentration of red dye and on the concentration of bleach. This is expressed in the rate law for the reaction: rate = k

Will bleach decompose fc&c blue dye?

Common household liquid bleach is often a solution of sodium or calcium hypochlorite. Being a powerful oxidizing agent, the hypochlorite ion can decompose many organic substances. In this experiment, bleach will used to decompose the FC&C blue dye #1, commonly found in blue-colored beverages and snacks.

How much bleach do I mix with yellow 6 dye?

Both times, we will start with 10 mL of a Yellow 6 dye solution. The first time, we will mix in 0.30 mL of 0.090 M NaOCl (household bleach). The second time, we will use 0.30 mL of bleach that is twice as concentrated, i.e. 0.180 M NaOCl.

### How do you determine the Order of reaction for a dye?

Action: We monitor the absorbance of the dye over time as it reacts with bleach. (This plot of absorbance versus time is called a kinetic trace). Result: We obtain a kinetic trace for the reaction. We can use this data to determine the reaction order with respect to the dye.