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Why are sea shells hard?
Sea shells are hard because they are made primarily of calcium carbonate, which is a mineral that provides strength and structure. Many marine organisms use calcium carbonate to build their shells, creating a protective barrier that helps them defend against predators and environmental stressors.
Why does sodium trioxocarbonate IV does NT decompose on heating?
I think it won't decompose on heating because of its stability to heat and the nature of bond formed between sodium and trioxocarbonate (IV) ion which could also be a function of it position in the activity series.
What is the streak of limestone?
A streak is the color of the powdered mineral left behind when the mineral is rubbed against a hard, rough surface. Limestone typically has a white streak due to its composition of calcium carbonate.
What do egg shells and sea shells have in common?
Both egg shells and sea shells are hard outer coverings that protect the organism inside. They are made of calcium carbonate and serve as a defense mechanism against predators. Additionally, both types of shells can vary in color, shape, and texture.
Control soil acidity?
To control soil acidity, you can add agricultural lime or dolomitic lime to raise the pH level. You can also incorporate organic matter like compost into the soil, which can help buffer against swings in pH. Regularly testing the soil pH levels and adjusting as needed will help maintain optimal conditions for plant growth.
What indicator in titration of sodium carbonate solution against hydrochloric acid would give a complete neutralization?
The indicator methyl orange can be used in the titration of sodium carbonate solution against hydrochloric acid to give a complete neutralization. At the endpoint, when all the carbonate ions have reacted to form bicarbonate ions, the solution will turn from yellow to pink.
How do you 0.02 m sulphuric acid standardization calculation?
To standardize 0.02 M sulfuric acid, you would titrate it against a known concentration of a base, such as sodium hydroxide. By measuring the volume of the base required to neutralize the acid, you can calculate the exact concentration of the sulfuric acid solution. The standardization calculation involves using the stoichiometry of the acid-base reaction to determine the concentration of the acid solution.
Which indicator is suitable for the titration of washing soda against HCL and why?
Phenolphthalein is a suitable indicator for titration of washing soda (sodium carbonate) against hydrochloric acid. This indicator changes color in the pH range of 8.2 to 10, making it ideal for this titration since the end point occurs when all the sodium carbonate has reacted to form sodium chloride and carbonic acid, resulting in a pH above 8.2.
What is the Frame structure of Serial Line Internet Protocol?
Preparation of standard solution and standardization of hydrochloric acid Objective : To prepare a standard solution of sodium carbonate and use it to standardize a given solution of dilute hydrochloric acid. Introduction : Anhydrous sodium carbonate is a suitable chemical for preparing a standard solution (as a primary standard). The molarity of the given hydrochloric acid can be found by titrating it against the standard sodium carbonate solution prepared. The equation for the complete neutralization of sodium carbonate with dilute hydrochloric acid is Na2CO3(aq) + 2HCl(aq) → 2NaCl(aq) + CO2(g) + H2O(l) The end-point is marked by using methyl orange as indicator. Chemicals :solid sodium carbonate, 0.1 M hydrochloric acid
Is phenolphthalein the indicator used in the titration of Na2CO3 against HCl solution?
Type your answer here... Phenolphthaelin indicator changes its colour at 8.3 pH. But the end point of this reaction is at pH 7. In weak base Strong acid case the curve gives sharp change from 3.2 to 6.0 pH. Hence phenolphthalein indicator will not be advicable.
Which indicator is used while titrating mohrs salt against potassium dichromate using internal indicator analysis?
ferroin indicator
Standardization of hydrochloric acid with borax?
Dissolve approximately 0.25g of Borax in distilled water. Titrate against hydrochloric acid using methyl orange indicator. At end-point, solution should be almost colourless against a white background.
Is methylorange the indicator used in the titration of Na2CO3 against HCl solution?
Methyl orange is not commonly used as an indicator in the titration of Na2CO3 against HCl solution. Phenolphthalein is a suitable indicator for this titration because it changes color in the pH range of the equivalence point.
Is methyl orange the indicator used in the titration of na2co3 against hcl solution?
No, methyl orange is not commonly used as the indicator in the titration of Na2CO3 against HCl solution. Phenolphthalein is the indicator of choice for this titration, as the endpoint is at a pH of around 8.2, which is the color change range of phenolphthalein.
Will any metal stand against sulfuric acid?
depends on the concentration. for example, dilute sulfuric acid does not react with copper, however when it is concentrated it will oxidize copper to copper sulfate being itself reduced to sulfur dioxide.
How important is standardization in ensuring the accuracy and reliability of a sodium hydroxide solution?
Standardization is crucial in ensuring the accuracy and reliability of a sodium hydroxide solution. It involves calibrating the concentration of the solution against a known standard to ensure consistent and precise results in experiments or processes. This helps maintain the quality and reliability of the solution for various applications.
What is the difference between titration and standardization?
Titration is a method used to determine the concentration of a substance in a solution by reacting it with a known concentration of another substance. Standardization, on the other hand, is the process of determining the exact concentration of a solution or reagent by titrating it against a primary standard. So, while titration is the general method for concentration determination, standardization is a specific process within titration used to calibrate solutions or reagents.
