In this case sodium zincate is formed.
HCl : makes it acidic. it decreases the pH NaOH : makes it alkaline. it increases the pH
When you add NaOH solution to a ZnCl2 solution, a precipitation reaction occurs. The hydroxide ions (OH⁻) from the NaOH react with zinc ions (Zn²⁺) to form zinc hydroxide (Zn(OH)₂), which is an insoluble white precipitate. This reaction can be represented by the equation: ZnCl₂ + 2 NaOH → Zn(OH)₂ (s) + 2 NaCl. Over time, the zinc hydroxide may further dehydrate to form zinc oxide.
Dissolve 0.4 g of NaOH in 100 ml of water. Try it out. Actually it is not suitable to prepare NaOH solutions in standard flasks.It should be made in beakers & must be standardised..This is done to find the correct normality...
1/.12 = 8.3333333333 This is the dilution factor you need to achieve. 250ml / 8.333333 = 30ml. This is a very important concept for chemistry so it may be important to try this method. The logical way works for me.
Nothing.
Add a base, such as NaOH, NH3, or LiOH
You would need to add 18.75g of solid NaOH to the 750g of aqueous solution to obtain a 2.5% NaOH solution by mass.
In this case sodium zincate is formed.
To prepare a 20 g/500 mL solution of NaOH, you would gradually add 20 g of NaOH to 500 mL of distilled water while stirring until fully dissolved. It is important to add the solid to the liquid to prevent splattering. Remember to always use caution and appropriate personal protective equipment when handling NaOH due to its caustic nature.
To achieve a pH of 8.0, you would need to add NaOH (sodium hydroxide) to increase the pH. NaOH is a strong base that will react with water to produce hydroxide ions, which will raise the pH. Adding HCl (hydrochloric acid) would lower the pH as it is a strong acid.
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To prepare 0.1N NaOH solution from a 1N NaOH solution, you can dilute 1 part of the 1N solution with 9 parts of water (since 1/10 = 0.1). Measure 1 volume of the 1N NaOH solution and add 9 volumes of water to it, then mix well to get your 0.1N NaOH solution.
To prepare a 10 N solution of NaOH, you would dissolve 400 g of NaOH pellets in enough distilled water to make 1 liter of solution. Remember to add the NaOH to the water slowly and carefully due to the exothermic nature of the reaction. Finally, stir the solution until all of the NaOH has fully dissolved.
HCl : makes it acidic. it decreases the pH NaOH : makes it alkaline. it increases the pH
To prepare 10 ml of 1M NaOH solution, you would need to dissolve 0.4 grams of NaOH (molar mass of NaOH is 40 g/mol) in enough distilled water to make a total volume of 10 ml. First, measure out 0.4 grams of NaOH using a balance. Then, add this solid NaOH to a small beaker and add distilled water while stirring until the total volume reaches 10 ml. Make sure to handle NaOH with care as it is a caustic substance.