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What is the colour change when onion solution is added to acids and bases?
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What is the colour of the solution if zinc is added to copper sulphate solution?
No colour
What colour does acids change litmus paper to?
It appears to be red if a lot of hydrogen ions is removed by a higher concentration of base added
How Sudan IV test change its color?
It changes from dark red when added to a solution to a lighter reddish-orange colour if testing positive for lipids.
What is a pH indicators?
A pH indicator is a halochromic chemical compound that is added in small amounts to a solution so that the pH (acidity or alkalinity) of the solution can be determined easily. Normally, the indicator causes the colour of the solution to change depending on the pH.
Describe a solution that contains a buffer?
Acetic acid is added to the solution, but the pH of the solution does not change. Sodium hydroxide, a base, is added to the solution, but the pH of the solution does not change.
What is the colour of the solution if zinc is added to copper sulphate solution?
No colour
What best describes a buffer?
A buffer is a substance in a solution that releases and captures hydrogen ions, keeping the pH the same.Sodium hydroxide, a base, is added to the solution, but the pH of the solution does not changeA buffer resists change in pH by accepting hydrogen ions when acids are added to the solution and donating hydrogen ions when bases are added.
What colour changes what acids and bases are added to rose indicator?
acids-magenta bases-green
What colour does acids change litmus paper to?
It appears to be red if a lot of hydrogen ions is removed by a higher concentration of base added
Why there is no colour change when phenolphthalein is added to the oxalic acid?
In a weak acid solution phenophthalein has the "lactone" form which hasn't color.
What happens when turmeric indicator is added to acids?
i think it remains in yellow colour
which of the following best describes a solution that contains a buffer?
sodium hydroxide, a base, is added to the solution, but the pH of the solution does not change.
How Sudan IV test change its color?
It changes from dark red when added to a solution to a lighter reddish-orange colour if testing positive for lipids.
What colour will a neutral solution become if a universal indicator was added?
Green
What colour does universal indicator go if salt solution is added?
red
What is a indicators?
A pH indicator is a halochromic chemical compound that is added in small amounts to a solution so that the pH (acidity or alkalinity) of the solution can be determined easily. Normally, the indicator causes the colour of the solution to change depending on the pH.
What is a pH indicators?
A pH indicator is a halochromic chemical compound that is added in small amounts to a solution so that the pH (acidity or alkalinity) of the solution can be determined easily. Normally, the indicator causes the colour of the solution to change depending on the pH.
