What is the pH of a 3.9*10^-8 M NaOH solution? - Socratic
2016年7月7日 · We would predict that as this is such a low concentration the #sf(pH)# will be close to 7.. This is an incredibly low concentration, so we must take into account the #sf(OH^-)# ions which arise from the auto - ionisation of water:
Will a precipitate form when we micx Ca(NO3)2(aq) with NaOH
2016年2月1日 · Possibly no. The idea here is that calcium nitrate, "Ca"("NO"_3)_2, and sodium hydroxide, "NaOH", will react to form calcium hydroxide, an insoluble solid, if and only if they are mixed in the appropriate concentrations.
How do you find pOH given pH? - Socratic
2016年5月9日 · pOH=14-pH To find the pOH from the given pH you can simply use the following relationship: pOH=14-pH This relationship is derived from the expression of the water dissociation constant K_w, where, K_w=[H^(+)][OH^(-)]=1.0xx10^(-14) Taking the -log of both parties we get: -logK_w=-log[H^(+)]-log[OH^(-)]=14 Therefore, pH+pOH=14=>pOH=14-pH remember, pH=-log[H^(+)] and pOH=-log[OH^(-)] This is a ...
What is the difference between an alpha and beta carbohydrate?
2016年12月16日 · They differ in the orientation of the "OH" group at "C-1". > When the straight-chain form of a carbohydrate like glucose closes to form a ring, it forms a new chiral centre at "C-1". This gives two different structures. Their Haworth formulas are Structure 1 and Structure 2 To assign the α or β configurations to these forms, you look at the relative positions of "C-6" and the "OH" group on ...
How do you calculate Ksp from molar solubility? - Socratic
2016年8月16日 · Magnesium hydroxide, #"Mg"("OH")_2#, has a molar solubility of #1.44 * 10^(-4)"M"# in pure water at room temperature. What is the #K_(sp)# of the salt? The first thing to do is identify the values of #n# and #m# by writing the dissociation equilibrium for …
The concentration of H+ ions in a solution is - Socratic
2017年5月30日 · 12.00 We're asked to calculate the "pH" of a solution with a known hydrogen (hydronium) ion concentration (["H"^+] or ["H"_3"O"^+]; they both represent the same thing in this case). To calculate the "pH" of a solution from a known ["H"^+], we can use the formula "pH" = -log["H"^+] That is, the "pH" of a solution is the negative of the logarithm of the hydronium/hydrogen ion concentration ...
Write the net ionic equation for the precipitation of zinc hydroxide ...
2018年2月17日 · Zn^(2+) + 2OH^(-) -> Zn(OH)_2 A net ionic equation shows us the ions that are actually participating in the reaction (versus the remaining ions that do not participate, called spectator ions). In your case the zinc and hydroxide ions were the only ions participating, as they were the only ions that formed a new substance; a precipitate. The other ions remained ions in solution. This website ...
What are the products of the neutralization reaction between ...
2014年5月22日 · The products are magnesium chloride and water. Hydrochloric acid is a strong acid. It reacts completely with water to form hydronium ions and chloride ions. HCl + H₂O → H₃O⁺ + Cl⁻ The equation is often simplified by omitting the water HCl → H⁺ + Cl⁻ Magnesium hydroxide, Mg(OH)₂, is a strong base. It contains hydroxide ions, …
Calculate the enthalpy of reaction for the reaction - Socratic
2015年6月19日 · Well, you could just look up the standard enthalpies of formation, although you didn't specify at what temperature or pressure, and what phases.
How many grams of barium hydroxide required to dissolve in
2016年7月2日 · 6.60g of Ba(OH)_2 is required. To answer this question, we need two things: The molar mass of barium hydroxide, 171.34 g/mol The equation for molality: ![www.keyword-suggestions.com]() We are given the molality and mass of solvent. The mass of solvent is expressed in terms of grams and we need kilograms so the following relationship must be used: 1000g = 1kg Divide 156g by 1000 to obtain 0.156 ...