Use indicators such as :
Indicator Color in acid Color in alkali
<em>methy lorange</em> red yellow
<em>phenolphthalein</em> colorless pink
Explanation:
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4. eyesight
explanation:
i’m not 100% bc you didn’t give any info on darwin
Answer:
Adding salt to the water increases the density of the solution because the salt increases the mass without changing the volume very much. When you add table salt (sodium chloride, NaCl) to water, the salt dissolves into ions, Na+ and Cl-. The volume increases by a small factor, but the mass increases by a bigger factor.
Explanation:
Answer:
Explanation:
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In this case, for the given chemical reaction, the law of mass action at equilibrium results:
Next, in terms of the change due to reaction extent, it is rewritten, considering an initial concentration of HCl of 0.25M (1mol/4L), as:
Thus, solving for via quadratic equation or solver, the following results are obtained:
Clearly, the solution is as the other result will provide a negative concentration for the hydrochloric acid at equilibrium, thereby, its equilibrium concentration turns out:
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