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Which thing gives colourless gas that burns with pop sound on reaction with dilute hcl?
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What color does phenolpthalein turn in the presenc of an acid?
Phenolphthalein only gives colour to bases with a pH above approximately 8.2-10. Then it gives a pink colour. As HCL is a strong acid it becomes colourless.
What is the chemical reaction when you burn a candle?
When a candle burns the reactions that occur are both chemical and physical. Chemical reaction is when substances are mixed together to create a different material. A physical reaction is when there is a change in the appearance of the substance. For example when water turns to ice, and when chocolate melts. The chemical reaction that happens when a candle burns is when the oxygen combines with the paraffin. When this happens, this makes carbon dioxide, water and other materials. When the wax reacts with the oxygen it gives off light and heat. The more oxygen that reacts with the candle when it burns, the brighter and hotter it is. The physical reaction that occurs is when the candle wax melts. When the energy (light and heat) inside of the candle is released it helps to melt the candle.
Does magnesium give off heat when it burns?
Yes. It gives off lots of heat as it burns white hot!
What term is used for the type of chemical reaction that gives out heat energy?
Exothermic reaction gives free heat (energy).
What happens during an exothermic reaction?
Exothermic reaction is a reaction which gives out heat. For example: when natural gas burns it release its energy to the surroundings which could be the water in a central heating system. this is a EXOTHERMIC REACTION between natural gas and oxygen.
When a candle burns it gives off carbon dioxide and?
WATER! H2O it is a combustion reaction and every combustion reaction produces carbon dioxide and water
Why dilute HCl is added to sulfate limit test?
an acidic media enhances the formation baso4 as an impurity and acts as a catalist, the reaction is so4 + bacl2 gives baso4...
What is the balanced equation for the reaction of action of dilute acid on a metal?
Hydrogen gas plus metal salt(metal +radical) For eg H2SO4 + Calcium gives us CaSO4 + H2 Hope that helps
What will happen if lead is allowed to react with dilute acid?
Reactions of Lead (Pb) with cold, dilute acids are very slow. Some examples are as follows:- 1) Reaction with dil. HCl and gives PbCl2 and H2 gas. Pb + 2HCl ---> PbCl2 + H2 Solid Aqs. Aqs. Gas 2) Reaction with dil. H2SO4 and gives PbSO4 and H2 gas. Pb + H2SO4 ----> PbSO4 + H2 Solid Aqs. Aqs. Gas 3) Reaction with dil. HNO3 and gives Pb(NO3)2 and H2 gas. Pb + 2HNO3 ------> Pb(NO3)2 + H2 Solid Aqs. Aqs. Gas Regards- Ashutosh talktomehiya@gmail.com
A small amount of solute versus the amount of solvent?
This gives you a dilute solution.
What is colour of sulfur trioxide gas?
Colorless , but exposure to moist air gives white fumes.
What color does phenolpthalein turn in the presenc of an acid?
Phenolphthalein only gives colour to bases with a pH above approximately 8.2-10. Then it gives a pink colour. As HCL is a strong acid it becomes colourless.
What is a reaction that gives out a lot of heat?
exothermic reaction
What is the chemical reaction when you burn a candle?
When a candle burns the reactions that occur are both chemical and physical. Chemical reaction is when substances are mixed together to create a different material. A physical reaction is when there is a change in the appearance of the substance. For example when water turns to ice, and when chocolate melts. The chemical reaction that happens when a candle burns is when the oxygen combines with the paraffin. When this happens, this makes carbon dioxide, water and other materials. When the wax reacts with the oxygen it gives off light and heat. The more oxygen that reacts with the candle when it burns, the brighter and hotter it is. The physical reaction that occurs is when the candle wax melts. When the energy (light and heat) inside of the candle is released it helps to melt the candle.
What is xenon's characteristic color?
Xenon is generally colourless, however when electricity is passed, it gives out a lovely pale violet colour.
Is Zinc and dilute Sulphuric acid gives Hydrogen gas for filling balloon?
No, because it is ignite.
Does magnesium give off heat when it burns?
Yes. It gives off lots of heat as it burns white hot!
