Ứng dụng của các phản ứng hóa học trong việc bảo quản các tác phẩm nghệ thuật và hiện vật lịch sử?

In Stock

Size Guide

$34.99 $29.99

Shipping and Returns Policy

Myers, A. G. et al. Science. 2005, 308, 395. Myers, A. G. et al. J. Am ... 69% g) BnBr, BaO, Ba(OH)2•8H₂O/. DMF. 18 h, 84% h) HgCl₂, THF-H₂O, 13 h. 67 ... HCHO + 4 [Ag(NH3)2]OH = (NH4)2CO3 + 6 NH3 + 2 H2O + 4 Ag. Проверим предположение: 0,2 моль серебра получается из 0,05 моль формальдегида. Тогда его молярная ... Nov 16, 2023 ... ... HCHO(l)+2[Ag(NH3)2]+(aq)+3OH-(aq)→2Ag(s)+HCOO-(aq)+4NH3(aq)+2H2O(l)(c)HCHO(l)+2Cu2+(aq)+5OH-(aq)→Cu2O(s)+HCOO-(aq)+3H2O(l(d)N2H4(l)+2H2O2 ... (CH3 )2 CHNO2 + HCHO ⟶ the major product is. (A) (CH3 )2 CHCH2 ONO2 (B) ... (D) CH3 MgBr, H + /CH3 OH, [Ag(NH3 )2 ]+ OH − Q.27 The major product formed ... Sep 26, 2018 ... ... HCHO + 2Ag2O → 4Ag + CO2 + H2O 2. Phản ứng của axit fomic ... AgNO3 + 3NH3 + H2O → [Ag(NH3)2]OH + NH4NO3 * Ag2O là cách viết đơn ... Jun 20, 2023 ... [Ag(NH3)2]+ + OH− ! AgOH + 2NH3. (7). 2Ag+ + HCHO + 3OH− / 2Ag + HCOO− + 2H2O. (8). The XRD spectra presented in Fig. 3a has obvious sharp. Sep 27, 2024 ... cm-2 for HCHO, 5 ×1014 molec.cm-2 for NO2) is quadratically added ... This is attributed to chemical feedbacks, namely the influence of NOx on OH ... Dec 26, 2012 ... Ag++e═Ag. 0.7996. 2. Ag2++e═Ag+. 1.980. 3. AgBr+e═Ag+ ... [Co(NH3)6]2++2e═Co+6NH3. -0.43. 105. Co(OH)2+2e═Co+2OH-. -0.73. 106. Co(OH)3+e═Co(OH)2+ ... ... Ag/AgClsat. the reference electrode,. 5 is the potentiostat, 6 is PC, 7 ... CoO → β-Co(OH)2 phase transition followed by thermal oxidation led to the. The peaks attributed to H 2 O and OH − disappeared after HCHO exposure ... Ag nanoparticles presented superior adsorbability of HCHO and better ...
  • Next Day Delivery by USPS Find out more

    Order by 9pm (excludes Public holidays)

    $11.99

  • Express Delivery - 48 Hours Find out more

    Order by 9pm (excludes Public holidays)

    $9.99

  • Standard Delivery $6.99 Find out more

    Delivered within 3 - 7 days (excludes Public holidays).

  • Store Delivery $6.99 Find out more

    Delivered to your chosen store within 3-7 days

    Spend over $400 (excluding delivery charge) to get a $20 voucher to spend in-store
  • International Delivery Find out more

    International Delivery is available for this product. The cost and delivery time depend on the country.

You can now return your online order in a few easy steps. Select your preferred tracked returns service. We have print at home, paperless and collection options available.

You have 28 days to return your order from the date it’s delivered. Exclusions apply.

View our full Returns and Exchanges information.

Our extended Christmas returns policy runs from 28th October until 5th January 2025, all items purchased online during this time can be returned for a full refund.

No reviews yet. Only logged in customers who have purchased this product may leave a review.